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Yao MH, Yang YH. [Clinicopathological analysis of 4 cases of lung cancer with concomitant EGFR mutation and ROS1 fusion]. Zhonghua Bing Li Xue Za Zhi 2023; 52:615-617. [PMID: 37263928 DOI: 10.3760/cma.j.cn112151-20221031-00903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- M H Yao
- Department of Pathology, Fujian Medical University Union Hospital; Fujian Key Laboratory of Translational Cancer Medicine, Fuzhou 350001, China
| | - Y H Yang
- Department of Pathology, Fujian Medical University Union Hospital; Fujian Key Laboratory of Translational Cancer Medicine, Fuzhou 350001, China
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2
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Liu YM, Ren Y, Jia YL, Yao MH, Zou K, Lin K, Sun X. [Exploration of construction mode of real-world data system]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:418-423. [PMID: 35345300 DOI: 10.3760/cma.j.cn112338-20210824-00675] [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: 06/14/2023]
Abstract
Real-world data study evidence, as an important part of evaluating the safety and effectiveness of drugs and devices, has attracted increasing attention from regulatory agencies and scholars both at home and abroad, and has become an essential source of evidence to support the development and review of drugs and devices. This paper systematically discusses the process and mode of real-world data system construction based on the preliminary practical study of real-world data according to the guidelines/technical specifications issued by regulatory agencies and academic research results. This study result provides not only reference for the generation of clinical evaluation evidence to meet the regulatory requirements for innovative drugs and devices, but also reference for researchers, sponsors and regulators to carry out real-world data studies successfully.
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Affiliation(s)
- Y M Liu
- Chinese Evidence-based Medicine Center and Cochrane China Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y Ren
- NMPA Key Laboratory for Real World Data Research and Evaluation in Hainan, Chengdu 610041, China
| | - Y L Jia
- Chinese Evidence-based Medicine Center and Cochrane China Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - M H Yao
- Chinese Evidence-based Medicine Center and Cochrane China Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - K Zou
- Chinese Evidence-based Medicine Center and Cochrane China Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - K Lin
- Center for Adverse Drug Reaction Monitoring of Boao Pilot Zone of Hainan province, Haikou 570216, China
| | - Xin Sun
- Chinese Evidence-based Medicine Center and Cochrane China Center, West China Hospital, Sichuan University, Chengdu 610041, China
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3
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Yao MH, Zheng YH, Yang YH, Huang JP, Wu D. [Clinicopathological analysis of 6 cases of lung adenocarcinoma with concomitant EGFR mutation and ALK fusion]. Zhonghua Bing Li Xue Za Zhi 2021; 50:1369-1371. [PMID: 34865427 DOI: 10.3760/cma.j.cn112151-20210501-00338] [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: 06/13/2023]
Affiliation(s)
- M H Yao
- Deparment of Pathology, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - Y H Zheng
- Deparment of Pathology, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - Y H Yang
- Deparment of Pathology, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - J P Huang
- Deparment of Pathology, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - D Wu
- Deparment of Pathology, Fujian Medical University Union Hospital, Fuzhou 350001, China
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4
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Yao MH, Jia YL, Ren Y, Liu YM, Zou K, Lin K, Zhu N, Sun X. [Real-world data studies of medical products in the context of special healthcare policy: study designs and key considerations]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:1306-1311. [PMID: 34814548 DOI: 10.3760/cma.j.cn112338-20210201-00085] [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: 06/13/2023]
Abstract
Boao Lecheng International Medical Tourism Pilot Area is the only administrative area in China where the pilot application of real-world data is performed. Based on the special healthcare policy in Boao Lecheng, conducting real-world data study to provide real-world evidence for the clinical evaluations and approvals of innovated medical products has become an important field that supports the reform of China's evaluation and approval system of medical products. Trustworthy real-world evidence needs to rely on both high-quality real-world data and reasonable and rigorous study designs. Based on the real-world data research guidelines and specifications issued by relevant academic research and regulatory authorities both at home and abroad, combined with the special policy environment of Boao Lecheng and previous practice experience, this paper summarizes the study designs of real world data in Boao Lecheng and discusses the key considerations of different study design in the context of special healthcare policies in Boao Lecheng in order to provide reference for the further study of real-world data.
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Affiliation(s)
- M H Yao
- Chinese Evidence-based Medicine Center,West China Hospital,Sichuan University,Chengdu 610041,China Key Laboratory for Real World Data Research and Evaluation in Hainan/Real World Data Research Institute of Hainan/Real World Data Research and Innovation Center of Boao Lecheng,Qionghai 571435,China
| | - Y L Jia
- Chinese Evidence-based Medicine Center,West China Hospital,Sichuan University,Chengdu 610041,China Key Laboratory for Real World Data Research and Evaluation in Hainan/Real World Data Research Institute of Hainan/Real World Data Research and Innovation Center of Boao Lecheng,Qionghai 571435,China
| | - Y Ren
- Chinese Evidence-based Medicine Center,West China Hospital,Sichuan University,Chengdu 610041,China Key Laboratory for Real World Data Research and Evaluation in Hainan/Real World Data Research Institute of Hainan/Real World Data Research and Innovation Center of Boao Lecheng,Qionghai 571435,China
| | - Y M Liu
- Chinese Evidence-based Medicine Center,West China Hospital,Sichuan University,Chengdu 610041,China Key Laboratory for Real World Data Research and Evaluation in Hainan/Real World Data Research Institute of Hainan/Real World Data Research and Innovation Center of Boao Lecheng,Qionghai 571435,China
| | - K Zou
- Chinese Evidence-based Medicine Center,West China Hospital,Sichuan University,Chengdu 610041,China Key Laboratory for Real World Data Research and Evaluation in Hainan/Real World Data Research Institute of Hainan/Real World Data Research and Innovation Center of Boao Lecheng,Qionghai 571435,China
| | - K Lin
- Center for Adverse Drug Reaction Monitoring of Boao Pilot Zone,Qionghai 571435,China National Medical Produets Administration,Haikou 570216,China
| | - N Zhu
- National Medical Produets Administration,Haikou 570216,China
| | - X Sun
- Chinese Evidence-based Medicine Center,West China Hospital,Sichuan University,Chengdu 610041,China Key Laboratory for Real World Data Research and Evaluation in Hainan/Real World Data Research Institute of Hainan/Real World Data Research and Innovation Center of Boao Lecheng,Qionghai 571435,China
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5
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Wu D, Li J, Yao MH, Zheng YH, Feng CY, Yang YH. [Clinicopathological significance in non-small cell lung cancer with mutations and co-mutations of EGFR, ALK and ROS1]. Zhonghua Bing Li Xue Za Zhi 2021; 50:251-253. [PMID: 33677892 DOI: 10.3760/cma.j.cn112151-20200617-00482] [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)
- D Wu
- Department of Pathology, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - J Li
- Department of Hematology, the Third Xiangya Hospital, Central South University, Changsha 410006, China
| | - M H Yao
- Department of Pathology, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - Y H Zheng
- Department of Pathology, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - C Y Feng
- Department of Pathology, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - Y H Yang
- Department of Pathology, Fujian Medical University Union Hospital, Fuzhou 350001, China
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Ren CL, Yao MH, Zhang L, Wang R, Jiang SL. [Surgical treatment of tricuspid valve disease due to permanent pacemaker lead]. Zhonghua Yi Xue Za Zhi 2020; 100:3147-3151. [PMID: 33142396 DOI: 10.3760/cma.j.cn112137-20200427-01345] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To summarize the etiology and surgical treatment experience of tricuspid valve disease due to permanent pacemaker lead. Methods: The medical records of 22 patients who underwent tricuspid valve operation for tricuspid valve disease due to permanent cardiac pacemaker lead from January 2008 to December 2017 were retrospectively reviewed. There were 12 males and 10 females, with a mean age of (62.6±12.1) years old (45-82 years old). All patients underwent tricuspid valve surgery via open thoracotomy under general anesthesia, including 8 patients through median thoracotomy approach, 4 patients through right mini-thoracotomy approach, and 10 patients with endoscopy-assisted and totally endoscopic technique. Moreover, 8 patients underwent tricuspid valve replacement, and 14 patients received tricuspid valve repair. Results: During the operation, 10 cases of severe tricuspid regurgitation were detected due to valve and subvalvular structures dysfunction involved in the pacing electrode, 7 cases showed tricuspid annulus dilation, and pacing electrode-related infective endocarditis were involved in the tricuspid valve of 5 cases. Compared with conventional median thoracotomy surgery, the amount of postoperative drainage fluid and hospitalization time after minimally invasive surgery (including right mini-thoracotomy and endoscopic surgery) were significantly reduced [281(120, 489) ml vs 368(180, 560) ml, P=0.02; 9.2(4.8, 14.5) d vs 11.2(6.3, 16.9) d, P=0.03]. Postoperative echocardiographic data showed that the size of the right atrium and ventricle in these patients was significantly reduced compared with preoperative data, and their cardiac function were normal. There was no difference of pacing electrode parameters between pre-and postoperative period. All 22 patients were cured and discharged, with no valve-and pacemaker-related complications. Conclusions: Patients with tricuspid valve disease due to permanent cardiac pacemaker lead should actively undergo surgery including tricuspid replacement or repair according to different etiologies, which exhibit satisfactory outcomes. Minimally invasive endoscopic tricuspid surgery is a new technique for the treatment of isolated tricuspid valve disease, with less surgical trauma and faster recovery.
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Affiliation(s)
- C L Ren
- Department of Cardiovascular Surgery, First Medical Center of PLA General Hospital, Beijing 100853, China
| | - M H Yao
- Department of Cardiovascular Surgery, First Medical Center of PLA General Hospital, Beijing 100853, China
| | - L Zhang
- Department of Cardiovascular Surgery, First Medical Center of PLA General Hospital, Beijing 100853, China
| | - R Wang
- Department of Cardiovascular Surgery, First Medical Center of PLA General Hospital, Beijing 100853, China
| | - S L Jiang
- Department of Cardiovascular Surgery, First Medical Center of PLA General Hospital, Beijing 100853, China
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Wu WJ, Yang XC, Yao MH, Wu GH, Xu JY, Zhao X, Zhang JY. [Assessment of mortality burden and economic loss attributed to long-term PM(2.5) exposure in the Beijing-Tianjin-Hebei area]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:1471-1476. [PMID: 33076601 DOI: 10.3760/cma.j.cn112338-20191205-00865] [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 accurately estimate the health burden and corresponding economic loss attributed to PM(2.5) pollution in the Beijing-Tianjin-Hebei (BTH) area in China in 2015. Method: By using satellite-retrieved PM(2.5) concentration data and population data provided by NASA (the spatial resolution was 1 km×1 km), this study estimated excess mortality attributed to long-term PM(2).5 exposure in BTH area in 2015 based on Global Exposure Mortality Model (GEMM). Besides, Value of Statistic Life (VSL) method was used to evaluate the corresponding health economic loss. Result: In BTH area, the population-weighted average PM(2.5) concentration during 2012-2014 was 46.25 μg/m(3), and 56.6% of total population lived in the area where annual average PM(2.5) concentration exceeded Grade Ⅱ of National Ambient Air Quality Standard in China (35 μg/m(3)); The PM(2.5)-related premature deaths amounted to 193.8 thousand (95%CI: 140.9 thousand-233.3 thousand), Beijing, Tianjin, Baoding, Shijiazhuang, and Handan were the top five cities with high incidences of PM(2.5)-related premature deaths; The corresponding health economic loss was about 35.934 billion (95%CI: 26.099 billion - 43.255 billion) RMB, accounting for 0.70% (95%CI: 0.51%-0.85%) of the area's GDP in 2015, Beijing, Tianjin, Baoding, Shijiazhuang, and Cangzhou were the top five cities with high health economic loss. Conclusions: PM(2.5) pollution has caused severe disease and economic burden in BTH area. Its spatial distribution suggested that it is particularly necessary to develop the air pollution prevention and control policies for key cities.
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Affiliation(s)
- W J Wu
- Department of Epidemiology and Health Statistic, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - X C Yang
- Department of Epidemiology and Health Statistic, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - M H Yao
- Department of Epidemiology and Health Statistic, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - G H Wu
- Department of Epidemiology and Health Statistic, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - J Y Xu
- Department of Epidemiology and Health Statistic, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - X Zhao
- Department of Epidemiology and Health Statistic, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - J Y Zhang
- Department of Epidemiology and Health Statistic, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
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Wang XT, Chen CW, Zheng XM, Wang B, Zhang SX, Yao MH, Chen H, Huang HF. Expression and prognostic significance of melatonin receptor MT1 in patients with gastric adenocarcinoma. Neoplasma 2019; 67:415-420. [PMID: 31829023 DOI: 10.4149/neo_2019_190220n141] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 08/11/2019] [Indexed: 11/08/2022]
Abstract
Melatonin receptor type 1 (MTNR1A or MT1) is known to play an important role in cancer progression; however, its prognostic value for resected gastric adenocarcinoma (RGA) is unknown. In this study, we examined the potential of MT1 as a prognostic biomarker for RGA. The expression of the MT1 was evaluated in 67 patients with RGA by immunohistochemistry, and the relationship between MT1 levels and RGA prognosis was analyzed by Chi-square test, multivariate Cox regression, Kaplan-Meier method, and log-rank test. High MT1 expression was associated with a poor survival rate (29.0%, p=0.002) and the occurrence of metastasis (62.9%, p=0.004). Kaplan-Meier survival analysis and log rank tests revealed that patients with high expression of the MT1 had significantly shorter median overall survival compared to those with low expression (33.0 vs. 65.0 months, respectively; p=0.02). Multivariate Cox analysis indicated that the calculated death risk (hazard ratio [HR]) in patients with high expression levels of the MT1 increased to 2.68 (95% confidence interval [CI] 1.21-5.94, p=0.015), which was higher compared to those with low levels. HR of death was also high in patients with advanced T stage (2.51; 95 % CI 1.00-6.26, p=0.049) and metastasis (5.02; 95% CI 1.94-13.03, p=0.001). Our results showed that high MT1 expression in primary gastric adenocarcinoma tissues was associated with the occurrence of metastasis and poor prognosis. It may have prognostic significance as a potential biomarker in patients with RGA.
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Affiliation(s)
- X T Wang
- Central Laboratory, Fujian Medical University Union Hospital, Fujian Medical University, Fuzhou, China
| | - C W Chen
- Central Laboratory, Fujian Medical University Union Hospital, Fujian Medical University, Fuzhou, China.,Department of Clinical Laboratory, The Hospital of Nanan City, Nanan, China
| | - X M Zheng
- Central Laboratory, Fujian Medical University Union Hospital, Fujian Medical University, Fuzhou, China
| | - B Wang
- Central Laboratory, Fujian Medical University Union Hospital, Fujian Medical University, Fuzhou, China
| | - S X Zhang
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, China
| | - M H Yao
- Department of Pathology, Fujian Medical University Union Hospital, Fujian Medical University, Fuzhou, China
| | - H Chen
- Department of Pathology, Fujian Medical University Union Hospital, Fujian Medical University, Fuzhou, China
| | - H F Huang
- Central Laboratory, Fujian Medical University Union Hospital, Fujian Medical University, Fuzhou, China
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Li XY, Wu D, Yao MH, Qiu XW, Zheng YH, Kang DY, Yang YH. [Comparison of roles between acid-fast staining and real time PCR in auxiliary diagnosis of tuberculosis]. Zhonghua Bing Li Xue Za Zhi 2018; 47:132-134. [PMID: 29429168 DOI: 10.3760/cma.j.issn.0529-5807.2018.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Zhao XF, Zhang JN, Dong HJ, Zhang T, Bian GL, Sun YW, Yao MH, Chen KJ, Xu GZ. Epidemiological characteristics of malaria in Ningbo City, China 2000-2011. Trop Biomed 2013; 30:267-276. [PMID: 23959492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The objective of this study was to explore the trend and the epidemiological characteristics of malaria in Ningbo from 2000 through 2011 and provide scientific evidence for the prevention and control. Using the retrospective study, data relating to malaria epidemics during 2000-2011 in Ningbo were collected through the questionnaires of the cases and other important surveillance data. Adult mosquitoes were collected using CDC light traps baited with CO2. Results showed that Plasmodium vivax was the main species, and Anopheles sinensis was the only vector species of malaria. The annual incidence rates (per 100000) ranged from 0.156 to 3.224, and about 95.41% of the cases were imported. The cases occurred mainly between May and November and the incidence showed two peaks, and the local transmission of malaria was determined by vector density. Considering the vast majority of these infections were imported vivax malaria cases from domestic endemic areas (particularly Anhui province), and may lead to limited local transmission, strengthening the routine monitoring of imported malaria, ensuring timely diagnosis, improving case detection rate, giving a standardized treatment to patients and intensifying public health education on malaria prevention are extremely important to malaria prevention and control activities.
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Affiliation(s)
- X F Zhao
- Ningbo Municipal Center for Disease Control and Prevention, Ningbo, China
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Chen CR, Qu WM, Qiu MH, Xu XH, Yao MH, Urade Y, Huang ZL. Modafinil exerts a dose-dependent antiepileptic effect mediated by adrenergic α1 and histaminergic H1 receptors in mice. Neuropharmacology 2007; 53:534-41. [PMID: 17681557 DOI: 10.1016/j.neuropharm.2007.06.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2007] [Revised: 06/18/2007] [Accepted: 06/19/2007] [Indexed: 10/23/2022]
Abstract
Epilepsy is characterized by neuronal hyperexcitability and hypersynchronization. Disruption of electroencephalographically (EEG) synchronized epileptiform discharges may be a possible therapy for epilepsy. In the present study, to clarify the role of EEG desynchronization on epilepsy, we investigated the effect of modafinil, a potent wake-promoting substance with EEG desynchronization activity, on epilepsy in mice and clarified the receptors involved in the suppression of seizure caused by maximal electroshock (MES) and pentylenetetrazol (PTZ) kindling models. Modafinil given at 22.5, 45, and 90 mg/kg, i.p. significantly decreased the incidence of tonic hindleg extension in MES seizure models, and protected against PTZ-induced convulsive behaviors in a dose-dependent manner. In addition, modafinil at 180 mg/kg exerted an antiepileptic effect in the MES model; however, at the same dosage it increased the seizure stage in the PTZ-kindling model. The antiepileptic effect in both MES and PTZ models was antagonized by the adrenergic alpha(1) receptor antagonist terazosin, but not by the adrenergic alpha(2) receptor antagonist yohimbine or by dopaminergic receptor antagonists, SCH-23390 (for D(1) receptors) and haloperidol (for D(2) ones). Pyrilamine, a histaminergic H(1) receptor antagonist, counteracted the antiepileptic action of modafinil in the PTZ induced-kindling model, but not in the MES seizure model. Taken together, the present findings indicate that modafinil exerted its antiepileptic effect via adrenergic alpha(1) and histaminergic H(1) receptors, and might be of potential use in the treatment of epilepsy.
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Affiliation(s)
- C R Chen
- Department of Pharmacology, Shanghai Medical College, Fudan University, Shanghai 200032, PR China
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12
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Yao MH, Lou YH. [Studies on mutation of isoniazid resistant genes in M. tuberculosis]. Hunan Yi Ke Da Xue Xue Bao 2001; 26:195-6. [PMID: 12536677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To understand mutation of isoniazid-resistant genes in M. tuberculosis clinical isolates, and to develop the method for rapid detection of drug resistance. METHOD Analyzing the katG genes in 30 M. tuberculosis clinical isolates with PCR-SSCP(single stranded conformation polymorphism) and PCR-DS (direct sequencing) techinques. RESULTS With the reference of M. tuberculosis strain H37 Rv was used as control, all isoniazid-sensitive isolates and 4 isoniazid-resistant isolates displayed ab normal PCR-SSCP and PCR-DS patterns. But of 12 isoniazid-resistant isolates, 4(33.4%) isolates displayed abnormal katG PCR-SSCP pattern, 8 (46.7%) isolates displayed abnormal katG PCR-SSCP pattern, 5(41.7%) isolates were missense mutation at codon 94, 3(25%) isolates were cosense mutation at codon 96. CONCLUSIONS Resistance to isoniazid in most M. tuberculosis isolates is due to the mutations on katG genes. PCR-SSCP techniques could be used as a method for rapid detection of isoniazid-resistance in M. tuberculosis.
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Affiliation(s)
- M H Yao
- Department of Microbiology, Xiangya School of Medicine, Central South University, Changsha 410078, China
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Zheng P, Chen G, Shi NC, Zhou SP, Lu YQ, Yao MH, He ZY. Effects of toquipidine on ionic channels of cultured embryonic Xenopus laevis myoblasts and neurons. Zhongguo Yao Li Xue Bao 1995; 16:427-39. [PMID: 8701760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
AIM To study the effects of toquipidine (1-p-methyl-phenyl-2-(alpha-piperidinoacetyl)-1, 2, 3, 4-tetrahydroisoquinoline hydrochloride, Toq), a new anti-arrhythmic agent first synthesized in China, on ionic channels. METHODS Ionic channel currents were recorded by whole-cell patch clamp technique in cultured embryonic Xenopus laevis myoblasts and neurons. RESULTS Toq (0.1, 1, 10, and 100 mumol L-1) caused a concentration-dependent inhibition of the Na+ currents with IC50 7.2 mumol L-1 (5.3-9.8 mumol L-1). Toq (10 mumol L-1) also suppressed the high-voltage-activated Ca2+ currents in neurons. But the steady-state outward K+ currents in myoblasts were activated by Toq (10 mumol L-1). CONCLUSION Toq blocked the Na+ and Ca2+ channels and opened the steady-state outward K+ channels.
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Affiliation(s)
- P Zheng
- Department of Pharmacology, Shanghai Medical University, China
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14
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Smith DJ, Yao MH, Allard LF, Datye AK. High-resolution scanning electron microscopy for the characterization of supported metal catalysts. Catal Letters 1995. [DOI: 10.1007/bf00817033] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yao MH, Dai ZX, Xu DZ, Yang ZC. Effects of nimodipine, felodipine, and verapamil on isolated human arteries. Zhongguo Yao Li Xue Bao 1995; 16:36-8. [PMID: 7771193] [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: 01/27/2023]
Abstract
AIM To evaluate whether there might be some difference in the action modes of nimodipine (Nim) and felodipine (Fel). METHODS Compare the inhibitory effects of Nim and Fel with that of verapamil (Ver) as a representative of phenylalklamine on norepinephrine (NE)- and CaCl2-evoked contractions of human arteries. RESULTS In Ca(2+)-free and high K+ depolarized solution, inhibitory effects of Nim, Fel, and Ver were more potent on CaCl2-induced contractions on isolated human arteries than those on NE-induced contractions. In CaCl2-induced contraction, the pD2 values for Nim, Fel, and Ver were 7.5, 7.42, 6.35 on uterine arteries; 7.38, 7.65, 7.20 on mesenteric arteries and 7.87, 9.10, 7.32 on renal arteries, respectively. Ver inhibited 2 components of NE-evoked contraction, while Nim and Fel only inhibited extracellular Ca(2+)-dependent contractions. CONCLUSION The result indicates that Fel has a selective action on human renal arteries.
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Affiliation(s)
- M H Yao
- Department of Pharmacology, School of Basic Medical Sciences, Shanghai Medical University, China
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16
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Yin GS, Du XQ, Wang GX, Wang XM, Zhang MX, Zhao WZ, Chen Y, Yao MH, Zheng HD, Liu XY. Study on the mechanism of interferon action (XI)--Effect of pppA2'p5'A on the level of cAMP and cGMP in macrophages. Sci China B 1989; 32:970-5. [PMID: 2482032] [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: 01/01/2023]
Abstract
In this paper, the increase of cellular cAMP and cGMP levels in macrophages induced by ppA2'p5' A2'p5'A (briefly 2'-5'P3A3) is first reported. The optimal concentration of 2'-5' P3A3 for the elevation of cellular cGMP to the highest level is 10(-7)-10(-6) mol/L, while that for cAMP is 10(-7) mol/L. The time for cGMP to reach its peak value is 15 min and that for cAMP is 2 h, when the cells are treated with 2'-5' P3A3 at 10(-7) mol/L, which is the optimal concentration for developing biological effect of macrophages (phagocytosis). These results suggest that cGMP and cAMP may be related to, or may be the mediators for, 2'-5'P3A3 action.
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Affiliation(s)
- G S Yin
- Shanghai Institute of Biochemistry, Academia Sinica
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Yao MH. [Five-flap plasty and its modification in the treatment of web scar contracture--preliminary experience]. Zhonghua Zheng Xing Shao Shang Wai Ke Za Zhi 1988; 4:109-11, 157. [PMID: 3151450] [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: 01/04/2023]
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Yao MH, Yang ZC. [Effect on the beta adrenoceptor agonist, isoprenaline, on cAMP levels in the mouse uterus]. Yao Xue Xue Bao 1985; 20:178-80. [PMID: 3000135] [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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Liu XJ, Yao MH, Fang TH, Song YY, Wu BY, Sun RY. [Some cardiovascular effects of cyclovirobuxine-D (author's transl)]. Zhongguo Yao Li Xue Bao 1982; 3:101-4. [PMID: 6214141] [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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