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Zhou YH, Lu Y, Meng JJ, Mou TT, Bai YJ, Zhang S, Zheng YQ, Deng QJ, Jiao J, Chang Z, Xie XF, Yun MK, Mi HZ, Li X, Zhang XL. [Predictive value of left ventricular ejection fraction reserve assessed by SPECT G-MPI for major adverse cardiovascular event in patients with coronary artery disease]. Zhonghua Xin Xue Guan Bing Za Zhi 2023; 51:626-632. [PMID: 37312481 DOI: 10.3760/cma.j.cn112148-20220919-00730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To evaluate the prognostic value of left ventricular ejection fraction (LVEF) reserve assessed by gated SPECT myocardial perfusion imaging (SPECT G-MPI) for major adverse cardiovascular event (MACE) in patients with coronary artery disease. Methods: This is a retrospective cohort study. From January 2017 to December 2019, patients with coronary artery disease and confirmed myocardial ischemia by stress and rest SPECT G-MPI, and underwent coronary angiography within 3 months were enrolled. The sum stress score (SSS) and sum resting score (SRS) were analyzed by the standard 17-segment model, and the sum difference score (SDS, SDS=SSS-SRS) was calculated. The LVEF at stress and rest were analyzed by 4DM software. The LVEF reserve (ΔLVEF) was calculated (ΔLVEF=stress LVEF-rest LVEF). The primary endpoint was MACE, which was obtained by reviewing the medical record system or by telephone follow-up once every twelve months. Patients were divided into MACE-free and MACE groups. Spearman correlation analysis was used to analyze the correlation between ΔLVEF and all MPI parameters. Cox regression analysis was used to analyze the independent factors of MACE, and the optimal SDS cutoff value for predicting MACE was determined by receiver operating characteristic curve (ROC). Kaplan-Meier survival curves were plotted to compare the difference in the incidence of MACE between different SDS groups and different ΔLVEF groups. Results: A total of 164 patients with coronary artery disease [120 male; age (58.6±10.7) years] were included. The average follow-up time was (26.5±10.4) months, and a total of 30 MACE were recorded during follow-up. Multivariate Cox regression analysis showed that SDS (HR=1.069, 95%CI: 1.005-1.137, P=0.035) and ΔLVEF (HR=0.935, 95%CI: 0.878-0.995, P=0.034) were independent predictors of MACE. According to ROC curve analysis, the optimal cut-off to predict MACE was a SDS of 5.5 with an area under the curve of 0.63 (P=0.022). Survival analysis showed that the incidence of MACE was significantly higher in the SDS≥5.5 group than in the SDS<5.5 group (27.6% vs. 13.2%, P=0.019), but the incidence of MACE was significantly lower in the ΔLVEF≥0 group than in theΔLVEF<0 group (11.0% vs. 25.6%, P=0.022). Conclusions: LVEF reserve (ΔLVEF) assessed by SPECT G-MPI serves as an independent protective factor for MACE, while SDS is an independent risk predictor in patients with coronary artery disease. SPECT G-MPI is valuable for risk stratification by assessing myocardial ischemia and LVEF.
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Affiliation(s)
- Y H Zhou
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - Y Lu
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - J J Meng
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - T T Mou
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - Y J Bai
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - S Zhang
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - Y Q Zheng
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - Q J Deng
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - J Jiao
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - Z Chang
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - X F Xie
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - M K Yun
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - H Z Mi
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - X Li
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - X L Zhang
- Nuclear Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
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Li J, Zheng YQ, Wang MJ, Zhang M. [A Caldwell-luc approach assisted endoscopic resection of juvenile nasopharyngeal angiofibroma]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021; 56:544-545. [PMID: 34011016 DOI: 10.3760/cma.j.cn115330-20210115-00022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- J Li
- Department of Otorhinolaryngology, the First Affiliated Hospital, Sun Yat-sen University, Otorhinolaryngology Institution of Sun Yat-sen University, Guangzhou 510080, China
| | - Y Q Zheng
- Department of Otorhinolaryngology, the First Affiliated Hospital, Sun Yat-sen University, Otorhinolaryngology Institution of Sun Yat-sen University, Guangzhou 510080, China
| | - M J Wang
- Department of Otorhinolaryngology, the First Affiliated Hospital, Sun Yat-sen University, Otorhinolaryngology Institution of Sun Yat-sen University, Guangzhou 510080, China
| | - Mingju Zhang
- Department of Otorhinolaryngology Head and Neck surgery, Sichuan Provincial Corps Hospital, Leshan 614000, Sichuan Province, China
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Qian XH, Zheng M, Zheng YQ, He JY, Yao YM, Tao R, Ma L, Li DM, Yuan Z. [Analysis on prediction power of HIV infection risk assessment tool in men who have sex with men in Guizhou province]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:672-676. [PMID: 34814449 DOI: 10.3760/cma.j.cn112338-20200923-01180] [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] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
Objective: To evaluate the prediction power of HIV infection risk assessment tool and the applicability in MSM in Guizhou province. Methods: MSM were recruited through snowball sampling method. Questionnaire surveys were conducted among the MSM using HIV infection risk assessment tool, and combined with HIV serologic test results, the risk prediction power of HIV infection risk assessment tool was evaluated. Results: A total of 3 379 MSM were recruited from January 2018 to December 2019 in Guizhou. The HIV infection rate was 3.3%(111/3 379). The mean risk scores of HIV positive and HIV negative MSM were (12.15±3.08) and (12.07±3.07), respectively. The difference in risk score was significant between MSM with different HIV status (t=8.69, P<0.001). According to the principle of decision tree, individual risk scores were divided into following three categories: ≤11.96, 11.97-14.80 and >14.80, the HIV infection rate was 0.8%, 4.3% and 8.6% respectively, suggesting that the higher the individual risk score was, the higher the HIV infection rate was (trend χ2=88.18, P<0.001). Multivariate logistic regression analysis showed that the higher the individual risk score was, the higher the risk of HIV infection was. Compared to the total score ≤11.96, the aOR values at total scores of 11.97-14.80 and >14.80 were 6.34 (95%CI: 3.38-11.88) and 14.07(95%CI: 7.44-26.61), respectively. The risk of HIV infection in Miao ethnic group was higher than that in Han ethnic group (aOR=1.83, 95%CI:1.04-3.21), and the risk of HIV infection in those with education level of primary school and below was higher than that in undergraduates or those with education level of junior college and above (aOR=2.50, 95%CI:1.06-5.88), and the risk of HIV infection was higher in those who had bisexual behaviors than in those who had homosexual behaviors (aOR=1.95, 95%CI:1.19-3.19). The risk of HIV infection was higher in those who had never received HIV testing (aOR=1.53, 95%CI:1.01-2.33). The area under the receiver operating characteristic (ROC) curve and area under ROC (AUC) for HIV infection prediction was 0.751 (95%CI:0.710-0.792, P<0.001). The maximum Youden's index was individual risk score of 12.56, and the sensitivity of the risk assessment tool was 0.838, and its specificity was 0.412. Conclusions: The results of HIV infection risk assessment tool in Guizhou indicated that in MSM the higher the individual risk score, the higher the risk of HIV infection is. The tool can be used to evaluate the risk of HIV infection in MSM, but the specificity should be improved.
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Affiliation(s)
- X H Qian
- Guizhou Provincial Center for Disease Control and Prevention, Guiyang 550004, China
| | - M Zheng
- Guizhou Provincial Center for Disease Control and Prevention, Guiyang 550004, China
| | - Y Q Zheng
- Guizhou Provincial Center for Disease Control and Prevention, Guiyang 550004, China
| | - J Y He
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China
| | - Y M Yao
- Guizhou Provincial Center for Disease Control and Prevention, Guiyang 550004, China
| | - R Tao
- Guizhou Provincial Center for Disease Control and Prevention, Guiyang 550004, China
| | - L Ma
- Guizhou Provincial Center for Disease Control and Prevention, Guiyang 550004, China
| | - D M Li
- National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z Yuan
- Guizhou Provincial Center for Disease Control and Prevention, Guiyang 550004, China
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Zheng YQ, Yuan YF, Tong ZW, Yin H, Yin SM, Guo SY. Watermelon-like TiO 2 nanoparticle (P25)@microporous amorphous carbon sphere with excellent rate capability and cycling performance for lithium-ion batteries. Nanotechnology 2020; 31:215407. [PMID: 32032007 DOI: 10.1088/1361-6528/ab73be] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
To overcome the inferior rate capability and cycling performance of TiO2 nanomaterials as an anode material of lithium-ion batteries, we encapsulate TiO2 nanoparticles (P25) in carbon spheres through a facile pyrrole polymerization and carbonization. Material characterization demonstrates TiO2 nanoparticles are uniformly embedded in microporous amorphous carbon spheres, forming a watermelon-like structure. P25@C exhibits excellent high rate capability with average discharge capacity of 496, 416, 297, 240, 180, 99, 49 and 25 mAh g-1 at current rate of 0.5C, 1C, 5C, 10C, 20C, 50C, 100C and 200C, which shows superior long-term cycling performance with discharge capacity of 106.9 mAh g-1 at 20C after 5000 cycles. The capacity loss rate is only 0.008% per cycle. The outstanding lithium storage performance is ascribed to the watermelon-like composite structure, which remarkably improves electronic conductivity and structure stability of TiO2 nanoparticles. More importantly, the agglomeration of TiO2 nanoparticles is eliminated, and the entire surface of every TiO2 nanoparticle participates in the electrochemical reaction, which brings about an intense capacitive Li storage effect and leads to the high specific capacity and excellent rate capability of P25@C. This is confirmed through qualitative and quantitative analysis of the contributions from surface capacitive storage and bulk intercalation storage to the total capacity of the composite.
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Affiliation(s)
- Y Q Zheng
- College of Machinery and Automation, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
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Zhao YC, Zheng HL, Wang XR, Zheng XL, Chen Y, Fei WD, Zheng YQ, Wang WX, Zheng CH. Enhanced Percutaneous Delivery of Methotrexate Using Micelles Prepared with Novel Cationic Amphipathic Material. Int J Nanomedicine 2020; 15:3539-3550. [PMID: 32547012 PMCID: PMC7245457 DOI: 10.2147/ijn.s251431] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 05/05/2020] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Methotrexate (MTX) is an antiproliferative drug widely used to treat inflammatory diseases and autoimmune diseases. The application of percutaneous administration is hindered due to its poor transdermal penetration. To reduce side effects and enhanced percutaneous delivery of MTX, novel methotrexate (MTX)-loaded micelles prepared with a amphiphilic cationic material, N,N-dimethyl-(N',N'-di-stearoyl-1-ethyl)1,3-diaminopropane (DMSAP), was designed. MATERIALS AND METHODS DMSAP was synthesized via three steps using simple chemical agents. H nuclear magnetic resonance and mass spectroscopy were used to confirm the successful synthesis of DMSAP. A safe and non-toxic phosphatidylcholine, soybean phosphatidylcholine (SPC), was added to DMSAP at different ratios to form P/D-micelles. Then, MTX-entrapped micelles (M/P/D-micelles) were prepared by electrostatic adsorption. The physicochemical properties and blood stability of micelles were examined thoroughly. In addition, the transdermal potential of the micelles was evaluated by permeation experiments. RESULTS In aqueous environments, DMSAP conjugates could self-assemble spontaneously into micelles with a low critical micelle concentration (CMC) of 0.056 mg/mL. Stable, spherical MTX-entrapped micelles (M/P/D-micelles) with a size of 100-120 nm and high zeta potential of +36.26 mV were prepared. In vitro permeation studies showed that M/P/D-micelles exhibited superior skin permeability and deposition of MTX in the epidermis and dermis compared with that of free MTX. CONCLUSION These special novel cationic M/P/D-micelles can enhance the permeability of MTX and are expected to be a promising percutaneous delivery system for therapy skin diseases.
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Affiliation(s)
- Yun-Chun Zhao
- Pharmacy Department, Zhejiang University, Women’s Hospital, School of Medicine, Hangzhou, People’s Republic of China
| | - Hai-Li Zheng
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, People’s Republic of China
| | - Xiao-Rong Wang
- Pharmacy Department, Zhejiang University, Women’s Hospital, School of Medicine, Hangzhou, People’s Republic of China
| | - Xiao-Ling Zheng
- Pharmacy Department, Zhejiang University, Women’s Hospital, School of Medicine, Hangzhou, People’s Republic of China
| | - Yue Chen
- Pharmacy Department, Zhejiang University, Women’s Hospital, School of Medicine, Hangzhou, People’s Republic of China
| | - Wei-Dong Fei
- Pharmacy Department, Zhejiang University, Women’s Hospital, School of Medicine, Hangzhou, People’s Republic of China
| | - Yong-Quan Zheng
- Pharmacy Department, Zhejiang University, Women’s Hospital, School of Medicine, Hangzhou, People’s Republic of China
| | - Wen-Xi Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, People’s Republic of China
| | - Cai-Hong Zheng
- Pharmacy Department, Zhejiang University, Women’s Hospital, School of Medicine, Hangzhou, People’s Republic of China
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Huang WJ, Liang MJ, Liu JH, Wang JB, Wang YJ, Zheng YQ. [Evaluation of medium to long term efficacy of balloon dilation in the treatment of aural fullness as chief complaint]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 55:150-153. [PMID: 32074754 DOI: 10.3760/cma.j.issn.1673-0860.2020.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To discuss the characteristics of symptoms improvement based on the follow-up evaluation of Eustachian tube balloon dilation medium to long-term efficacy in patients with symptomatic Eustachian tube dysfunction (SETD). Methods: Patients from 2015 to 2017 were followed up after Eustachian tube balloon dilation (with the sense of aural fullness, or tinnitus and hearing ambiguity). All participants had been done ETDQ-7 before surgery and were re-evaluated with ETDQ-7 in follow-up. The improvement of overall and individual symptoms scores in ETDQ-7, the effects of gender and the difference of scores at different stages (12-18 months, 18-24 months and 24-30 months) after the operation were analyzed. Results: There were 29 patients, including 16 males and 13 females, whose age ranged from 20 to 62 years old. The medium to long-term score of ETDQ-7 significantly declined after surgery (27.0±7.9 vs. 14.1±7.5, P<0.05). Among all symptoms, symptoms like "blockage feeling in ear or being like under the water, constriction feeling" , "sound of blisters or explosions in the ear" decreased obviously (P<0.05). Comparing different stages after surgery, the scores of ETDQ-7 existed no difference (P>0.05). And the difference of gender showed no significant influence on surgery effects. Conclusion: The subjective symptoms of patients with Eustachian tube dysfunction diagnosed with SETD can be significantly improved in the medium to long-term follow-up after Eustachian tube balloon dilation, and the degree of improvement is not linearly related to the postoperative time.
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Affiliation(s)
- W J Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Hearing and Speech-Language Science, Xinhua College, Sun Yat-sen University, Guang Zhou 510520, China
| | - M J Liang
- Department of Otorhinolaryngology Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Hearing and Speech-Language Science, Xinhua College, Sun Yat-sen University, Guang Zhou 510520, China
| | - J H Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - J B Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Y J Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Y Q Zheng
- Department of Otorhinolaryngology Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Hearing and Speech-Language Science, Xinhua College, Sun Yat-sen University, Guang Zhou 510520, China
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Abstract
Abstract
A liquid chromatographic/mass spectrometric (LC/MS) method is reported for the determination of the onium-type plant growth regulator mepiquat chloride in cotton and soil. The pesticide was extracted from the sample with ethanol and water containing 2 NH4Cl. The extract was cleaned up on a solid-phase extraction C18 column, and the pesticide was determined by LC/MS. The average recoveries were 85.993.8, 81.391.7, and 78.194.7, with corresponding relative standard deviations of 3.49.6, 3.712.3, and 4.09.8, from soil, cotton leaves, and cotton seeds, respectively. A coefficient of determination of R2 0.9964 was obtained for the analyte calibration graph, from 0.05 to 100 g/mL. Decision limits, CC, and detection capability, CC, were calculated. Electrospray ionization LC/MS in the positive-ion mode (ESI+) was used to detect mepiquat chloride in extracts of soil, cotton leaves, and cotton seeds. The ion at m/z 114 in the mass spectrum was monitored.
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Affiliation(s)
- Xin-Gang Liu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Pesticide Chemistry and Application Technology, Ministry of Agriculture, Beijing 100094, People’s Republic of China
| | - Feng-Shou Dong
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Pesticide Chemistry and Application Technology, Ministry of Agriculture, Beijing 100094, People’s Republic of China
| | - Shuo Li
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Pesticide Chemistry and Application Technology, Ministry of Agriculture, Beijing 100094, People’s Republic of China
| | - Yong-Quan Zheng
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Pesticide Chemistry and Application Technology, Ministry of Agriculture, Beijing 100094, People’s Republic of China
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Wang L, Yuan YF, Chen Q, Zheng YQ, Yin SM, Guo SY. Construction of Co 3O 4 three-dimensional mesoporous framework structures from zeolitic imidazolate framework-67 with enhanced lithium storage properties. Nanotechnology 2019; 30:435402. [PMID: 31300617 DOI: 10.1088/1361-6528/ab31ec] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
High-porosity mesoporous framework structures are attractive for electrochemical energy storage and other applications. Herein we demonstrate a novel synthesis strategy to make zeolitic imidazolate framework-67 oxidize to a Co3O4 three-dimensional mesoporous framework structure. This strategy relies on the oxygen-limitation effect of the closed nanocage and the affinity effect of polyvinylpyrrolidone towards zeolitic imidazolate framework-67. Several TiO2 nanospheres, as the unique structure junctions, are uniformly embedded within the Co3O4 framework to enhance the framework strength. The TiO2/hydrous titania polyhedron nanocage, as the protecting shell, further encapsulates the Co3O4 framework, forming a perfect capsule-type hybrid. As anode materials for lithium-ion batteries, TiO2@Co3O4 framework capsules show superior lithium storage performance with high reversible capacity, stable cycling life and good rate capability. A reversible capacity of 1042 mAh g-1 can be delivered after 200 cycles at a current density of 300 mA g-1. The average discharge capacity over 200 cycles reaches 926 mAh g-1. This demonstrates the superiority of this material structure and its great potential as an anode for high-performance lithium-ion batteries. This work indicates a new strategy to take advantage of metal-organic frameworks to synthesize their mesoporous framework derivatives.
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Affiliation(s)
- L Wang
- College of Machinery and Automation, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
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Dai YR, Yang HD, Zheng YQ. [Outcomes of same-day bilateral endoscopic tympanoplasty]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:1271-1274. [PMID: 30282174 DOI: 10.13201/j.issn.1001-1781.2018.16.014] [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] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the feasibility of simultaneous bilateral endoscopic for tympanoplasty in patients with bilateral chronic suppurative otitis media. Method:Fifteen patients (30 ears) with bilateral chronic suppurative otitis media who underwent bilateral endoscopic transcanal tympanoplasty on the same day were enrolled in this study. The ear with worse-hearing was selected as the first operation side, the contralateral ear as the second one. The operation group consisted of 22 ears of Type 1 tympanoplasty, 5 ears of Type 2 tympanoplasty and 3 ears of Type 3 tympanoplasty. All second sides(15 ears) underwent Type 1 tympanoplasty. The cartilage-perichondrium graft was harvested from the tragal of the first side and was cut in two halves which could be used for the both sides. The graft success and hearing improvement were evaluated at the postoperative 6th month according to the follow up results of the endoscopic image and the pure-tone audiometry. Result:The graft take rate was 96.7%(27/30) without any retraction pockets or displaced grafts. The graft take rate of the first side was 93.3%(14/15), and the one of the second side was 100.0%(15/15). The average air conduction thresholds were (50.9±9.1) dB HL preoperatively and (32.0±6.0) dB HL postoperatively(P<0.01). The average air-bone gap overall improved from (30.2±7.9) dB HL preoperatively to (13.7±6.0) dB HL postoperatively(P<0.01). Conclusion:Bilateral same-day endoscopic tympanoplasty are safe and cost effective in appropriately selected patients. It can offer favorable out-comes in selected patients with chronic suppurative otitis media.
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Affiliation(s)
- Y R Dai
- Department of Otolaryngology Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - H D Yang
- Department of Otolaryngology Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Y Q Zheng
- Department of Otolaryngology Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
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Li XX, Ou YK, Tang XW, Chen L, Liu P, Huang QH, Zheng YQ. [Clinical features of recurrences in benign paroxysmal positional vertigo]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:823-826. [PMID: 29921050 DOI: 10.13201/j.issn.1001-1781.2018.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Indexed: 11/12/2022]
Abstract
Objective:To study the clinical features of patients with recurrent benign paroxysmal positional vertigo (BPPV) and to analyze potential related factors of recurrences.Method:Eighty patients who suffered recurrent BPPV were enrolled in this study. Patients were divided into three groups: young group (21 cases), middle-aged group (25 cases) and old-aged group (34 cases). Theclinical data including age, gender, pathological pattern and canal type of BPPV were collected. We further analyzed the efficacy of repositioning treatment for recurrent BPPV.Result:In this study, there are 62 cases of primary BPPV(77.50%) and 18 cases of secondary BPPV(22.50%). In patients with recurrent BPPV, the laterior semicircular canal BPPV and posterior semicircular canals BPPV were the most common, and there was no differences on the aspects of age and gender in the two groups of patients with recurrent HSC BPPV and PSC BPPV (P>0.05).Compared with the primary diagnosis, we found that 48.75% cases relapsed in the same semicircular canals, 21.25% cases relapsed in other canals of the same ear, and 30.00% cases relapsed in a different ear. In this study, 96.25% patients with recurrent BPPV were cured in a month and one-time reset success rate was 56.25%.Conclusion: The age, gender, pathological pattern and canal type show certain clinical features of recurrent BPPV. The evidence of long term of recurrence course and high variability of problematic location support the approval opinion based on new otolith.
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Affiliation(s)
- X X Li
- Department of Listening and Speech Science, Xinhua College of Sun Yat-sen University, Guangzhou, 510520, China
| | - Y K Ou
- Sun Yat-sen Memorial Hospital,Sun Yat-sen University, Institute of Otolaryngology,Institute of Hearing and Speech of Sun Yat-sen University
| | - X W Tang
- Sun Yat-sen Memorial Hospital,Sun Yat-sen University, Institute of Otolaryngology,Institute of Hearing and Speech of Sun Yat-sen University
| | - L Chen
- Sun Yat-sen Memorial Hospital,Sun Yat-sen University, Institute of Otolaryngology,Institute of Hearing and Speech of Sun Yat-sen University
| | - P Liu
- Sun Yat-sen Memorial Hospital,Sun Yat-sen University, Institute of Otolaryngology,Institute of Hearing and Speech of Sun Yat-sen University
| | - Q H Huang
- Sun Yat-sen Memorial Hospital,Sun Yat-sen University, Institute of Otolaryngology,Institute of Hearing and Speech of Sun Yat-sen University
| | - Y Q Zheng
- Sun Yat-sen Memorial Hospital,Sun Yat-sen University, Institute of Otolaryngology,Institute of Hearing and Speech of Sun Yat-sen University
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Wu XH, Zhang Y, Du PQ, Xu J, Dong FS, Liu XG, Zheng YQ. Impact of fomesafen on the soil microbial communities in soybean fields in Northeastern China. Ecotoxicol Environ Saf 2018; 148:169-176. [PMID: 29054028 DOI: 10.1016/j.ecoenv.2017.10.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 09/21/2017] [Accepted: 10/03/2017] [Indexed: 06/07/2023]
Abstract
Fomesafen, a widely adopted residual herbicide, is used throughout the soybean region of northern China for the spring planting. However, the ecological risks of using fomesafen in soil remain unknown. The aim of this work was to evaluate the impact of fomesafen on the microbial community structure of soil using laboratory and field experiments. Under laboratory conditions, the application of fomesafen at concentrations of 3.75 and 37.5mg/kg decreased the basal respiration (RB) and microbial biomass carbon (MBC). In contrast, treatment with 375mg/kg of fomesafen resulted in a significant decrease in the RB, MBC, abundance of both Gram+ and Gram- bacteria, and fungal biomass. Analysis of variance showed that the treatment accounted for most of the variance (38.3%) observed in the soil microbial communities. Furthermore, the field experiment showed that long-term fomesafen application in continuously cropped soybean fields affected the soil bacterial community composition by increasing the relative average abundance of Proteobacteria and Actinobacteria species and decreasing the abundance of Verrucomicrobia species. In addition, Acidobacteria and Chloroflexi species showed a pattern of activation-inhibition. Taken together, our results suggest that the application of fomesafen can affect the community structure of soil bacteria in the spring planting soybean region of northern China.
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Affiliation(s)
- Xiao-Hu Wu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ying Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China; Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Peng-Qiang Du
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jun Xu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Feng-Shou Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xin-Gang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yong-Quan Zheng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.
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12
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Wang XJ, Liang MJ, Zhang JP, Huang H, Zheng YQ. [Research on activity evolution of cerebral cortex and hearing rehabilitation of congenitally deaf children after cochlear implant]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:1632-1638. [PMID: 29798116 DOI: 10.13201/j.issn.1001-1781.2017.21.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Indexed: 11/12/2022]
Abstract
Objective:There is a significant difference in the hearing rehabilitation between the congenitally deaf children after cochlear implant(CI). The intrinsic mechanism that affects the hearing rehabilitation in patients was discussed from the perspective of evoked EEG source activity.Method:Firstly, we collected the ERP data from 23 patients and 10 control group children during 0, 3, 6, 9 and 12 months after CI. According to the hearing rehabilitation during 12 months after CI, the patients were divided into two groups: rehabilitation of "the good" and "the poor". Then we used sLORETA to show the changes in the groups of patients' cerebral cortex and compared with the control group.Result:Cross-modal reorganization of cerebral cortex exists in the congenitally deaf children. The cross-modal reorganization gradually degraded and the activity of the relevant cortex followed by normally after CI. There was a statistically significant difference(P < 0.05) in the temporal lobe and the associated cortex around parietal lobe between "the good" and "the poor" groups after 12 months.Conclusion:The normalization of the cross-modal reorganization in patients reflects the hearing rehabilitation after CI, especially the normalization of the activity of the temporal lobe and the associated cortex around parietal lobe, which influences the rehabilitation effect of the auditory function to some extent. This research demonstrated the detection of the mechanism has important significance for the hearing recovery training and evaluation of the hearing rehabilitation after CI.
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Affiliation(s)
- X J Wang
- Department of Medical Information Engineering, School of Electrical Engineering and Information,Sichuan University, Chengdu, 610065, China
| | - M J Liang
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University
| | - J P Zhang
- Department of Medical Information Engineering, School of Electrical Engineering and Information,Sichuan University, Chengdu, 610065, China
| | - H Huang
- Department of Medical Information Engineering, School of Electrical Engineering and Information,Sichuan University, Chengdu, 610065, China
| | - Y Q Zheng
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University
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Wang XH, Liu YN, Tian K, Yao CX, Li LM, Zheng YQ, Shi ZM. Expression and clinical significance of ARTN and MMP-9 in endometrial carcinoma. J BIOL REG HOMEOS AG 2017; 31:879-887. [PMID: 29254290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The aim of this study was to detect the differential expression of Artemin (ARTN) and matrix metallopeptidase protein 9 (MMP-9) in endometrial carcinoma (EC) and to assess their clinical significance in order to provide insight into the pathological mechanism of tumor infiltration and metastasis in EC. A total of 48 patients who had undergone surgery for EC at the School of Medicine and Affiliated Hospital of HeBei University of Engineering between July 2015 and July 2016 were included in the study. The 48 patients were classified into 3 groups according to tumor stage: 27 patients with EC stage I, 12 patients with EC stage II and 9 patients with EC stage III. The samples collected from each patient included fresh normal endometrial tissue, endometrial simple hyperplastic tissue and endometrial atypical hyperplastic tissue. The transcription levels of ARTN and MMP-9 mRNA in each group were investigated using RT-PCR. The expression levels of ARTN and MMP-9 protein in each group were examined using Western blotting. Spearmans correlation analysis was used to analyze the correlation between the expression levels of ARTN and MMP-9 proteins and EC tissue type. RT-PCR and Western blotting assays revealed that the expression levels of ARTN and MMP-9 were increased in normal endometrial tissue, simple hyperplastic tissue, atypical hyperplastic tissue and EC of stages I, II and III. The differences noted were statistically significant (P less than 0.05). Furthermore, Western blot analysis indicated that the expression levels of ARTN and MMP-9 proteins in lymphatic metastatic tissues were higher than those in non-lymphatic metastatic tissues (P less than 0.05). The expression levels in the infiltration tissues of the deep muscular layer were higher than those noted in the light muscular layer (P less than 0.05). The expression levels of ARTN and MMP-9 proteins were positively correlated (P less than 0.05). The data suggest that ARTN and MMP-9 are involved in the occurrence, development, invasion and metastasis of EC, and play a synergistic role in the development of EC and lymphatic metastasis.
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Affiliation(s)
- X H Wang
- Pathological Staff Room, School of Medicine and Affiliated Hospital of HeBei University of Engineering, Hebei, China
| | - Y N Liu
- Pathological Staff Room, School of Medicine and Affiliated Hospital of HeBei University of Engineering, Hebei, China
| | - K Tian
- Oncology Department, School of Medicine and Affiliated Hospital of HeBei University of Engineering, Hebei, China
| | - C X Yao
- Pathological Staff Room, School of Medicine and Affiliated Hospital of HeBei University of Engineering, Hebei, China
| | - L M Li
- Pathological Staff Room, School of Medicine and Affiliated Hospital of HeBei University of Engineering, Hebei, China
| | - Y Q Zheng
- Department of Clinical Laboratory, Handan Maternal and Child Health-Care Hospital, Hebei, China
| | - Z M Shi
- Pathological Staff Room, School of Medicine and Affiliated Hospital of HeBei University of Engineering, Hebei, China
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Hu XY, Zheng XY, Ma FR, Long M, Han R, Zhou LJ, Wang F, Gong R, Pan T, Zhang SX, Du B, Jin P, Guo CY, Zheng YQ, Liu M, He LH, Qiu JH, Xu M, Song L, Xu XH, Liu XW, Wang SP. [Prevalence of hearing disorders in China: a population-based survey in four provinces of China]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 51:819-825. [PMID: 27938607 DOI: 10.3760/cma.j.issn.1673-0860.2016.11.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the prevalence, severity of hearing disorders and demographics of people with hearing disorders based on the whole population in Jilin, Guangdong, Shannxi and Gansu provinces in China. Methods: According to " WHO Ear and Hearing Disorders Survey Protocol" , 144 clusters were chosen with probability proportional sampling(PPS) method from the four provinces covering 194, 688, 061 residents. Audiological test, otological examination and questionnaire surveying were conducted for all samples from August, 2014 to September, 2015. The hearing disorders were classified according to WHO criteria and classification. Results: Among 47 511 targeted residents, 45, 052 individuals (94.82% response rate) participated in the survey. The standardized prevalence rates of hearing disorders and disabling hearing disorders were 15.84 % and 5.17 % respectively. Almost 50% of people with hearing disorders had no awareness of it or its starting time. There was significant difference in the prevalence among people of different ages, genders, occupations, provinces, marital status and education levels. The prevalence of hearing disorders increased significantly as age grew. People above 60 years old occupied 55.31% of the total hearing disorders. The prevalence of hearing disorders among male, people of low education and those who lost husband or wife, as well as workers and farmers was relatively higher. Conclusions: The prevalence of hearing disorders is high, and hearing disorders are " invisible" . Demographics and socioeconomic factors significantly influence the prevalence of hearing disorders.
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Affiliation(s)
- X Y Hu
- China Rehabilitation Research Center for Deaf Children, Beijing 100029, China
| | - X Y Zheng
- Institute of Population Research, Peking University, Beijing 100871, China
| | - F R Ma
- Department of Otorhinolaryngology, Peking University Third Hospital, Beijing 100191, China
| | - M Long
- China Rehabilitation Research Center for Deaf Children, Beijing 100029, China
| | - R Han
- China Rehabilitation Research Center for Deaf Children, Beijing 100029, China
| | - L J Zhou
- China Rehabilitation Research Center for Deaf Children, Beijing 100029, China
| | - F Wang
- China Rehabilitation Research Center for Deaf Children, Beijing 100029, China
| | - R Gong
- Institute of Population Research, Peking University, Beijing 100871, China
| | - T Pan
- Department of Otorhinolaryngology, Peking University Third Hospital, Beijing 100191, China
| | - S X Zhang
- Department of Otorhinolaryngology, Peking University Third Hospital, Beijing 100191, China
| | - B Du
- Department of Otorhinolaryngology Head and Neck Surgery, the First Hospital of Jilin University, Changchun 130021, China
| | - P Jin
- Department of Otorhinolaryngology Head and Neck Surgery, the First Hospital of Jilin University, Changchun 130021, China
| | - C Y Guo
- Language and Hearing Rehabilitation Center of Jilin Province, Changchun 130052, China
| | - Y Q Zheng
- Department of Otorhinolaryngology Head and Neck Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China
| | - M Liu
- Otorhinolaryngology Hospital of First Affiliated Hospital of Sun Yetsan University, Guangzhou 510080, China
| | - L H He
- Guangdong Rehabilitation Centre, Guangzhou 510055, China
| | - J H Qiu
- Department of Otorhinolaryngology Head and Neck Surgery, Xijing Hospital, Xi'an 710032, China
| | - M Xu
- Department of Otorhinolaryngology Head and Neck Surgery, Second Affiliated Hospital, Xi'an Jiaotong University School of Medicine, Xi'an 710004, China
| | - L Song
- Language and Hearing Rehabilitation Center of Shanxi Province, Xi'an 710016, China
| | - X H Xu
- Department of Otorhinolaryngology, Lanzhou General Hospital, Lanzhou Command, Lanzhou 730050, China
| | - X W Liu
- Department of Otorhinolaryngology, Lanzhou University Second Hospital, Lanzhou 730030, China
| | - S P Wang
- Hearing and Language Rehabilitation Center of Gangsu Province, Lanzhou 730050, China
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Xu XJ, Hu Z, Ma HA, Yan DN, Xu YD, Zheng YQ. [The facial nerve study of multi-slice spiral computed tomography in congenital abnormality of external and middle ear]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:347-351. [PMID: 29871259 DOI: 10.13201/j.issn.1001-1781.2017.05.005] [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] [Received: 01/07/2017] [Indexed: 06/08/2023]
Abstract
Objective:Images of temporal bone are obtained on Siemens 64 slices spiral CT scanner with high resolution scanning to describe the course of facial nerve for better preoperative evaluation of CAEMA.Method:To describe the course of facial nerve on rectangular coordinate system from three silce on HRCT, 29 patients(35 ears) are enrolled in our study in ENT department from November 2005 to March 2007 in the second affiliated hospital of sun yan sen university, who are all diagnosed not acquired deformity but CAEME, associated with no congenital deformity syndromes and no middle ear or mastoid operations before. Patients with bilateral ears deformity are 6, and unilateral ears deformity are 23 (13 right and 10 left) in the study group. The control group is the normal ears of unilateral ear deformity.Result:In the study group, the shortest distance from FN tympanic segment to oval window is shorter than that of the normal group (P< 0.05). In CAEME of unilateral ears the FN mastoid segment displaces anteriorly about 2.7 mm, and in CAEME of bilateral ears displaces 3.0mm, compared with the normal ears (P< 0.05). The deformity degree of auricle has correlations with anteriorly displacement of facial nerve mastoid segment (P< 0.05).Conclusion:The FN mastoid segment is anteriorly displacement in both bilateral and unilateral ear deformity. The deformity degree of auricle has correlations with anteriorly displacement of facial nerve mastoid segment. The lateral displacement of facial nerve doesn't occur usually in CAEME. The shortest distance between oval window and tympanic segment of FN become shorter than normal ears.
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Affiliation(s)
- X J Xu
- Department of Otorhinolaryngology, Chinese Medicine Hospital of Jiangsu Province, Nanjing, 210029, China
| | - Z Hu
- Department of Otorhinolaryngology, Chinese Medicine Hospital of Jiangsu Province, Nanjing, 210029, China
| | - H A Ma
- Department of Otorhinolaryngology, Chinese Medicine Hospital of Jiangsu Province, Nanjing, 210029, China
| | - D N Yan
- Department of Otorhinolaryngology, Chinese Medicine Hospital of Jiangsu Province, Nanjing, 210029, China
| | - Y D Xu
- Department of Otorhinolaryngology, the Second Hospital of Sun Yat-Sen University
| | - Y Q Zheng
- Department of Otorhinolaryngology, the Second Hospital of Sun Yat-Sen University
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Zhong JW, Ou YK, Huang QH, Chen L, Tang XW, Zheng YQ. [The characteristics of the patients with BPPV accompanied byidiopathic sudden sensorineural hearing loss]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1118-1120. [PMID: 29798434 DOI: 10.13201/j.issn.1001-1781.2016.14.006] [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: 04/08/2016] [Indexed: 06/08/2023]
Abstract
Objective:To investigate the characteristics of the patients with BPPV accompanied by idiopathic sudden sensorineural hearing loss(ISSNHL).Method:Retrospective analysis of 150 cases of patients with ISSNHL.All data of the cases were collected,including history,pure tone audiograms and VNG tests.Result:16.0% of all patients had BPPV accompanied by ISSNHL.77.8% of these patients had an abnormal caloric test result.73.9% of them had a profound hearing loss.The hearing outcome between those with and without BPPV had no significant difference.Conclusion:Patients with BPPV accompanied by ISSNHL seem to have a more severe damage than those without BPPV,while the hearing outcomes seem no significant difference between them.
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Affiliation(s)
- J W Zhong
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - Y K Ou
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - Q H Huang
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - L Chen
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - X W Tang
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - Y Q Zheng
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
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Zhang XY, Ou YK, Lin YL, Xu YD, Huang QH, Cai YX, Xiong H, Liang MJ, Yang HD, Zhong JW, Zheng YQ. [A clinical analysis for sudden sensorineural hearing loss withcontralateral sensorineural hearing loss]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1104-1109. [PMID: 29798431 DOI: 10.13201/j.issn.1001-1781.2016.14.003] [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: 05/10/2016] [Indexed: 06/08/2023]
Abstract
Objective:To analyze the clinical characteristics and prognosis,and to learn the impact factors of patients with sudden sensorineural hearing loss with contralateral sensorineural hearing loss(SSHLwCSHL).Method:Clinical data of 63 cases of patients with SSHLwCSHL were analyzed systematically,including all the clinical manifestations,audiologic characteristics and the effect assessment,and compared with that of unilateral sudden sensorineural hearing loss(USSHL) and bilateral sudden sensorineural hearing loss(BSSHL).Base on those,we summarized comprehensively the development and prognosis characteristics of the disease.Result:The incidence of SSHLwCSHL was 8.3 percent of overall patients with SSNHL.SSHLwCSHL occurs more commonly in male patients,with more vertigo,diabetes mellitus,and lipid panel abnormalities compared with other groups.Hearing curve and the degree of hearing loss of the prevalence ear of SSHLwCSHL was statistically significant difference with USSHL(P<0.05).Most common reason of the contralateral hearing loss was sudden sensorineural hearing loss(49%),and 59% patients of SSHLwCSHL suffered hearing loss of other ear after 2-10 years after contralateral hearing loss.The total effective rate was 14.3%,1 in 63 patients cured,1 excellence and 6 effective.The total effective rate was 9.5% in patients with severe or profound sensorineural hearing loss in the contralateral ear,which was lower than that of patients with moderate and moderately severe sensorineural hearing loss in the contralateral-ear(P=0.021).Conclusion:SSHLwCSHL has complex condition.The prognosis for improvement is poor.Recognition of similarities and differences between bilateral and unilateral SSNHL can help in counseling and managing the patients.
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Affiliation(s)
- X Y Zhang
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - Y K Ou
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - Y L Lin
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - Y D Xu
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - Q H Huang
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - Y X Cai
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - H Xiong
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - M J Liang
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - H D Yang
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - J W Zhong
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
| | - Y Q Zheng
- Department of Otolaryngology,Sun Yat-Sen Memorial Hospital,Sun Yat-Sen University,Guangzhou,510120,China
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Sun RX, Zhang CH, Zheng YQ, Zong YC, Yu XD, Huang P. Molecular identification and genetic variation of varieties of Styphnolobium japonicum (Fabaceae) using SRAP markers. Genet Mol Res 2016; 15:gmr7837. [PMID: 27173318 DOI: 10.4238/gmr.15027837] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Thirty-four Styphnolobium japonicum varieties were analyzed using sequence-related amplified polymorphism (SRAP) markers, to investigate genetic variation and test the effectiveness of SRAP markers in DNA fingerprint establishment. Twelve primer pairs were selected from 120 primer combinations for their reproducibility and high polymorphism. We found a total of 430 amplified fragments, of which 415 fragments were considered polymorphic with an average of 34.58 polymorphic fragments for each primer combination. The percentage of polymorphic fragments was 96.60%, and four primer pairs showed 100% polymorphism. Moreover, simple matched coefficients ranged between 0.68 and 0.89, with an average of 0.785, indicating that the genetic variation among varieties was relatively low. This could be because of the narrow genetic basis of the selected breeding material. Based on the similarity coefficient value of 0.76, the varieties were divided into four major groups. In addition, abundant and clear SRAP fingerprints were obtained and could be used to establish DNA fingerprints. In the DNA fingerprints, each variety had its unique pattern that could be easily distinguished from others. The results demonstrated that 34 varieties of S. japonicum had a relatively narrow genetic variation. Hence, a broadening of the genetic basis of breeding material is necessary. We conclude that establishment of DNA fingerprint is feasible by means of SRAP markers.
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Affiliation(s)
- R X Sun
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Haidian District, Beijing, China
| | - C H Zhang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Haidian District, Beijing, China
| | - Y Q Zheng
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Haidian District, Beijing, China
| | - Y C Zong
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Haidian District, Beijing, China
| | - X D Yu
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Haidian District, Beijing, China
| | - P Huang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Haidian District, Beijing, China
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Qu YK, Huang QH, Zheng YQ, Zhong JW, Chen L, Li XH, Tang XW, Liu P, Xu YD. [A clinical study into the vestibular function and therapy of patients with chronic positional symptoms after acute vestibular syndrome]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:613-616. [PMID: 29871089 DOI: 10.13201/j.issn.1001-1781.2016.08.007] [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] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Indexed: 06/08/2023]
Abstract
Objective:To investigate the status of the vestibular function of the patients with chronic positional symptoms after peripheral acute vestibular syndrome (AVS) and the curative effect of the vestibular rehabilitation therapy (VRT). Method:Using caloric test (CT), head shaking nystagmus test (HST), cervical vestibular evoked myogenic potentials as well as ocular vestibular evoked myogenic potentials to estimate the function of semicircular canal and otolith organs. The patients with normal VEMPs are divided as Group A. Otherwise are as Group B. Both groups are treated with VRT. The curative effect is estimated by vestibular symptom index (VSI) and Berg balance scale (BBS). Result:Thirty-three of 37 patients (86.5%) had an abnormal result of CT and HST, with 23 of these patients (65.7%) had an abnormal of both test. Twenty-two patients (59.5%) were in Group A and 15 (40.5%) in Group B. Before the therapy, Group B had a higher score of the balance and dizziness symptoms of VSI (P<0.05), and Group A had a higher score of the BBS (P<0.05). After the therapy, the VSI scores of both groups dropped and scores of the BBS raised. Conclusion:Patients with chronic positional symptoms after peripheral AVS have dynamic vestibular lesions to different extents. Those with otolith organs lesions tend to have a worse function of balance. Nevertheless, patients have a better off after VRT.
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Affiliation(s)
- Y K Qu
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Q H Huang
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Y Q Zheng
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - J W Zhong
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - L Chen
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - X H Li
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - X W Tang
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - P Liu
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Y D Xu
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
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Cheng BB, Sun QW, Zheng YQ. Development of microsatellite loci for Taxus wallichiana var. wallichiana (Taxaceae) and cross-amplification in Taxaceae. Genet Mol Res 2015; 14:16018-23. [PMID: 26662395 DOI: 10.4238/2015.december.7.15] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Nine polymorphic microsatellite loci were isolated and characterized in Taxus wallichiana var. wallichiana, an endangered species in China. The number of alleles per locus ranged from 2 to 20. Observed and expected heterozygosities varied from 0.0260 to 0.5325 and 0.3603 to 0.9231, respectively. Positive cross-amplification of the 9 loci was observed in 2 other varieties of T. wallichiana and 4 other Taxaceae species. These loci will be of value for studying population genetic structures and for genetic resource conservation in T. wallichiana and other Taxus species.
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Affiliation(s)
- B B Cheng
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Lab of Molecular Identification of Plant Varieties, Research Institute of Forestry, Chinese Academy of Forestry, Haidian District, Beijing, China
| | - Q W Sun
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Lab of Molecular Identification of Plant Varieties, Research Institute of Forestry, Chinese Academy of Forestry, Haidian District, Beijing, China
| | - Y Q Zheng
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Lab of Molecular Identification of Plant Varieties, Research Institute of Forestry, Chinese Academy of Forestry, Haidian District, Beijing, China
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Wang N, Zhao LC, Zheng YQ, Dong MJ, Su Y, Chen WJ, Hu ZL, Yang YJ, Gao HC. Alteration of Interaction Between Astrocytes and Neurons in Different Stages of Diabetes: a Nuclear Magnetic Resonance Study Using [1-13C]Glucose and [2-13C]Acetate. Mol Neurobiol 2014; 51:843-52. [DOI: 10.1007/s12035-014-8808-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2014] [Accepted: 07/10/2014] [Indexed: 12/17/2022]
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22
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Lu HY, Sun WY, Chen B, Zhang YP, Cai JF, Su D, Wang Z, Zheng YQ, Ma SL. Epidermal growth factor receptor mutations in small cell lung cancer patients who received surgical resection in China. Neoplasma 2012; 59:100-4. [PMID: 22103903 DOI: 10.4149/neo_2012_013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
To know the incidence of epidermal growth factor receptor (EGFR) mutations in small cell lung cancer (SCLC) patients who received surgical resection in mainland China. xTAG technology was used to detect the EGFR exon 19 and exon 21 mutations of 40 patients with SCLC who received surgical treatment in Zhejiang Cancer Hospital from 1998 to 2010. 2 of 40 cases were found with mutations in exon 19 of the EGFR gene. The mutation in exon 19 of the EGFR gene is in a female and non smoking patient which pathology is SCLC combined adenocarcinoma, and the other is male and smoking patient which pathology is SCLC combined squamous cell carcinoma. The EGFR mutation is rare in SCLC patients, and EGFR mutation might occur more often in combined SCLCs than conventional patients.
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Affiliation(s)
- H Y Lu
- Zhejiang Cancer Hospital, Hangzhou, People's Republic of China
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23
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Zheng YQ, Deng S, Niu L, Xu FJ, Chai MY, Yu G. Functionalized cotton via surface-initiated atom transfer radical polymerization for enhanced sorption of Cu(II) and Pb(II). J Hazard Mater 2011; 192:1401-1408. [PMID: 21742433 DOI: 10.1016/j.jhazmat.2011.06.054] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Revised: 06/19/2011] [Accepted: 06/20/2011] [Indexed: 05/27/2023]
Abstract
The surface-initiated atom transfer radical polymerization (ATRP) was used to successfully prepare the aminated cotton and polyacrylic acid sodium (P(AA-Na))-grafted cotton for the efficient removal of Cu(II) and Pb(II) from aqueous solution in this study. The modified cotton surfaces were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS). The grafted long polymers with high density of amine and carboxyl groups on the cotton surfaces were responsible for the enhanced adsorption of heavy metals. The sorption behaviors including sorption kinetics, isotherms and pH effect were investigated. The sorption equilibrium of Cu(II) and Pb(II) was achieved within 1h on the P(AA-Na)-grafted cotton, much faster than 8h on the aminated cotton. According to the Langmuir fitting, the maximum sorption capacities of Cu(II) and Pb(II) on the P(AA-Na)-grafted cotton were 2.45 and 2.44 mmol/g, respectively, higher than many adsorbents reported in the literature. The P(AA-Na)-grafted cotton had better adsorption behaviors for Cu(II) and Pb(II) than the aminated cotton.
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Affiliation(s)
- Y Q Zheng
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science & Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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24
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Chen KJ, Zheng YQ, Kong CH, Zhang SZ, Li J, Liu XG. 2,4-Dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA) and 6-methoxy-benzoxazolin-2-one (MBOA) levels in the wheat rhizosphere and their effect on the soil microbial community structure. J Agric Food Chem 2010; 58:12710-12716. [PMID: 21087039 DOI: 10.1021/jf1032608] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Despite increasing knowledge of 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA) and 6-methoxy-benzoxazolin-2-one (MBOA) as allelochemicals involved in the defense of wheat against pests, relatively little is known about their levels in the rhizosphere and interactions with the soil microbial community. This study quantified DIMBOA and MBOA in the wheat rhizosphere and analyzed the soil microbial community structure. MBOA rather than DIMBAO was found in the wheat rhizosphere, and its concentration varied with cultivars, plant densities, and growth conditions. Wheat could detect the presence of competing weeds and respond by increased MBOA in the rhizosphere. There was a linear positive relationship between the MBOA level in the wheat rhizosphere and soil fungi/bacteria. When DIMBOA was applied to soil, yielding MBOA increased soil fungi. There were different phospholipid fatty acid (PLFA) patterns in soil incubated with DIMBOA and MBOA. These results suggested that DIMBOA and MBOA could affect the soil microbial community structure to their advantage through the change in fungi populations.
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Affiliation(s)
- Ke-Jing Chen
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
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26
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Liu XG, Dong FS, Zheng YQ, Li YB. Determination of Bromoxynil Octanoate in Soil and Corn by GC with Electron Capture and Mass Spectrometry Detection Under Field Conditions. J AOAC Int 2009. [DOI: 10.1093/jaoac/92.3.919] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
In this paper, a simple, and rapid analysis of bromoxynil octanoate is reported for soil, corn leaves, and corn seeds by utilizing one-step liquid-liquid extraction and partitioning, followed by GC with electron capture (ECD) and mass spectrometry (MS) detection. The method was validated by recovery experiments and assessment of matrix effects. Recoveries for GC-ECD and GC/MS were 82.3110.7 with a relative standard deviation of <14 using matrix-matched calibration solutions for quantification. The limit of quantitation (LOQ) values were 0.005 and 0.2 mg/kg for the ECD and MS detector, respectively, depending on the sensitivity of the target compound. The concentration levels for bromoxynil octanoate residue found in soil, corn leaves, and corn seeds from field experiments were clearly below the LOQ of the ECD detector. The half-life times of bromoxynil octanoate were 2.24.2 days in soil and corn leaves. These results indicated that the developed method was appropriate for analysis of bromoxynil octanoate in soil and corn samples.
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Affiliation(s)
- Xin-Gang Liu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Pesticide Chemistry and Application, Ministry of Agriculture, Beijing 100193, People’s Republic of China
| | - Feng-Shou Dong
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Pesticide Chemistry and Application, Ministry of Agriculture, Beijing 100193, People’s Republic of China
| | - Yong-Quan Zheng
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Pesticide Chemistry and Application, Ministry of Agriculture, Beijing 100193, People’s Republic of China
| | - Yuan-Bo Li
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Pesticide Chemistry and Application, Ministry of Agriculture, Beijing 100193, People’s Republic of China
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Liu XG, Dong FS, Zheng YQ, Li YB. Determination of bromoxynil octanoate in soil and corn by GC with electron capture and mass spectrometry detection under field conditions. J AOAC Int 2009; 92:919-926. [PMID: 19610386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In this paper, a simple, and rapid analysis of bromoxynil octanoate is reported for soil, corn leaves, and corn seeds by utilizing one-step liquid-liquid extraction and partitioning, followed by GC with electron capture (ECD) and mass spectrometry (MS) detection. The method was validated by recovery experiments and assessment of matrix effects. Recoveries for GC-ECD and GC/MS were 82.3-110.7% with a relative standard deviation of <14% using matrix-matched calibration solutions for quantification. The limit of quantitation (LOQ) values were 0.005 and 0.2 mg/kg for the ECD and MS detector, respectively, depending on the sensitivity of the target compound. The concentration levels for bromoxynil octanoate residue found in soil, corn leaves, and corn seeds from field experiments were clearly below the LOQ of the ECD detector. The half-life times of bromoxynil octanoate were 2.2-4.2 days in soil and corn leaves. These results indicated that the developed method was appropriate for analysis of bromoxynil octanoate in soil and corn samples.
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Affiliation(s)
- Xin-Gang Liu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Pesticide Chemistry and Application, Ministry of Agriculture, Beijing 100193, People's Republic of China
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Liu XG, Dong FS, Li S, Zheng YQ. Determination of mepiquat chloride residues in cotton and soil by liquid chromatography/mass spectrometry. J AOAC Int 2008; 91:1110-1115. [PMID: 18980126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A liquid chromatographic/mass spectrometric (LC/MS) method is reported for the determination of the onium-type plant growth regulator mepiquat chloride in cotton and soil. The pesticide was extracted from the sample with ethanol and water containing 2% NH4Cl. The extract was cleaned up on a solid-phase extraction C18 column, and the pesticide was determined by LC/MS. The average recoveries were 85.9-93.8, 81.3-91.7, and 78.1-94.7%, with corresponding relative standard deviations of 3.4-9.6, 3.7-12.3, and 4.0-9.8%, from soil, cotton leaves, and cotton seeds, respectively. A coefficient of determination of R2 = 0.9964 was obtained for the analyte calibration graph, from 0.05 to 100 microg/mL. Decision limits, CCalpha, and detection capability, CCbeta, were calculated. Electrospray ionization LC/MS in the positive-ion mode (ESI+) was used to detect mepiquat chloride in extracts of soil, cotton leaves, and cotton seeds. The ion at m/z 114 in the mass spectrum was monitored.
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Affiliation(s)
- Xin-Gang Liu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Pesticide Chemistry and Application Technology, Ministry of Agriculture, Beijing, People's Republic of China
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Yang PC, Zeng HY, Zhang TY, Zheng YQ, Chen JZ. The effects of sensitization and hypersensitivity reaction on transepithelial antigen transport of rat nasal mucosa. Otolaryngol Head Neck Surg 2001; 125:54-9. [PMID: 11458215 DOI: 10.1067/mhn.2001.116185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
METHODS The prevalence of airway allergy is very high. The ways that antigen passes across the airway tract epithelial barrier are not well understood. This study uses a model antigen, horseradish peroxidase (HRP), to sensitize and challenge the respiratory tract in the rat model. RESULTS The results showed increases in HRP endosomes in nasal epithelial cells 5 minutes after HRP challenge in the sensitized rats compared with controls, which were further increased 30 minutes after HRP challenge, as well as with the paracellular region filled with HRP products. Meanwhile, mast cells were activated as shown by degranulation. Analysis of cell type showed that there were many more HRP endosomes in the nonciliated cells and there were many more nonciliated cells in the nasal mucosa of the sensitized rats. CONCLUSION The results demonstrate that sensitization promotes airway mucosal epithelial cells' uptake and transport of specific antigen and that mast cells may play certain roles in this process.
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Affiliation(s)
- P C Yang
- Department of Otolaryngology, the First Affiliated Hospital, Shanxi Medical University, Taiyuan, Shanxi, China.
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Abstract
In our search for novel anti-HIV agents, seven 17-carboxylated steroid derivatives were synthesized and evaluated as potential anti-HIV agents. Compound 13 exhibited potent anti-HIV activity in acutely infected H9 lymphocytes with EC50 and therapeutic index values of 0.8 microM and 300, respectively.
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Affiliation(s)
- P Xia
- Department of Organic Chemistry, School of Pharmacy, Shanghai Medical University, People's Republic of China
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Chiou GC, Shen ZF, Zheng YQ, Li BH. Enhancement of systemic delivery of met-enkephalin and leu-enkephalin eyedrops with permeation enhancers. Methods Find Exp Clin Pharmacol 1992; 14:361-6. [PMID: 1513191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
It was found that methionine enkephalin (Met-Enk) and leucine-enkephalin (Leu-Enk) can be delivered efficiently into the systemic circulation through the outer route in rabbits. When 50 mcl of 1% Met-Enk eyedrops without absorption enhancers were instilled into eyes, the rabbits' blood concentration rose from 92 pg/ml to 153 pg/ml in 10 min. When either of two permeation enhancers (BL-9 or Brij-78) was added at a 0.5% concentration to the ophthalmic solution, the systemic absorption of 1% Met-Enk was markedly improved. Its blood level was increased to approximately 3.4 times that without the enhancer. When the eyedrops of 0.3% Met-Enk plus 0.5% absorption enhancer were administered, the blood concentration reached higher than that reached by 1% Met-Enk without permeation enhancers. Similar results were obtained with Leu-Enk except the systemic absorption was enhanced by BL-9 and Brij-78 even further to 10-fold and 8.3-fold, respectively. These results indicate that the systemic delivery of Met-Enk and Leu-Enk through eyes, especially with the addition of permeation enhancers, is a feasible alternative route to parenteral injection.
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Affiliation(s)
- G C Chiou
- Department of Medical Pharmacology and Toxicology, Texas A&M University College of Medicine, College Station
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Chiou GC, Stolowich NJ, Zheng YQ, Shen ZF, Zhu M, Min ZD. Effects of some natural products on sugar cataract studied with nuclear magnetic resonance spectroscopy. J Ocul Pharmacol 1992; 8:115-20. [PMID: 1506753 DOI: 10.1089/jop.1992.8.115] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Four commercial anticataract drugs and five flavonoids isolated from Chinese herbs were studied on their effects to inhibit sugar cataract formation in vitro using 13C-nuclear magnetic resonance spectroscopy (MRS). Pa-Wei-Di-Huan-Wan (PWDHW) and Zhang-Yan-Ming (ZYM) were effective in inhibiting sorbitol formation, whereas Bai-Nei-Ting (BNT) and Pearl Min-Mu-Ye (Pearl MMY) were ineffective in inhibiting sorbitol formation. Among five flavonoids tested, four were moderately effective in inhibiting sorbitol formation, and one was totally ineffective up to 1 x 10(-4)M used.
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Affiliation(s)
- G C Chiou
- Institute of Ocular Pharmacology, Texas A&M University, College Station
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Abstract
In order to avoid injections, oxytocin and vasopressin were systemically administered through ocular route. Although oxytocin and vasopressin are small peptide drugs with only 9 amino acids, their absorptions were relatively poor. The systemic absorption of these peptides through eyes was markedly enhanced by the addition of an absorption enhancer, 0.5% Brij-78 (polyoxyethylene-20-stearyl ether), in the eyedrops of these peptides. It is concluded that it is feasible to administer oxytocin and vasopressin as eyedrops to avoid parenteral injections.
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Affiliation(s)
- G C Chiou
- Institute of Ocular Pharmacology, Texas A&M University College of Medicine, College Station
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Chiou GC, Shen ZF, Zheng YQ. Adjustment of blood sugar levels with insulin and glucagon eyedrops in normal and diabetic rabbits. J Ocul Pharmacol 1990; 6:233-41. [PMID: 2290069 DOI: 10.1089/jop.1990.6.233] [Citation(s) in RCA: 21] [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: 12/31/2022]
Abstract
The ophthalmic solutions of insulin and glucagon plus permeation enhancers, BL-9 and Brij-78, were administered to rabbit eyes to study the systemic absorption of these peptide drugs and their effects to affect the blood glucose levels. When plain insulin eyedrops were given, the blood sugar levels were little affected. When insulin plus permeation enhancers were instilled to the eyes, the blood glucose reduced markedly in both normal and diabetic animals. Although sufficient concentrations of glucagon can be reached with plain glucagon eyedrops, the addition of permeation enhancers increased the systemic absorption of glucagon through eyes markedly. As a result, the blood sugar levels were raised markedly by glucagon eyedrops at much lower concentrations. These results indicate that systemic delivery of insulin, glucagon, and other peptide drugs through eyes is a feasible alternative route to parenteral injection particularly when permeation enhancers are added.
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Affiliation(s)
- G C Chiou
- Institute of Ocular Pharmacology, Texas A & M, University College of Medicine, College Station
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Cao J, Zheng YQ, Liu TP, Feng LZ. Inhibitory effects of ginsenoside Rg1 and Rb1 on rat brain microsomal Na+,K(+)-ATPase activity. Zhongguo Yao Li Xue Bao 1990; 11:10-4. [PMID: 2169691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Rat brain microsomal Na+, K(+)-ATPase activity was inhibited significantly and rapidly by ginsenoside Rb1. The IC50 of Rb1 for Na+,K(+)-ATPase was 6.3 +/- 1.0 mumol/L. The inhibition was enhanced with increasing the concentration of Rb1 or decreasing that of Na+ and K+. Kinetic analysis revealed that ginsenoside was an uncompetitive inhibitor with respect to ATP. The inhibitory effect of Rg1 on rat brain microsomal Na+,K(+)-ATPase was much weaker than that of Rb1.
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Affiliation(s)
- J Cao
- Department of Pharmacology, Nanjing Medical College, China
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Zheng YQ, Xu FB, Zhou S, Li NS, Shen ZL, Chen WJ. [Abortifacient activity of caffeic acid and its antiprogestational action in early pregnant mice]. Zhongguo Yao Li Xue Bao 1987; 8:250-4. [PMID: 2959022] [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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37
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Zheng YQ. [Studies on the quality standards of Li-Yan-Ling and its tablets (author's transl)]. Zhong Yao Tong Bao 1981; 6:17-9. [PMID: 6210447] [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: 01/19/2023]
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