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Justine EE, Jang SW, Lee S, Lee HJ, Wang RB, Kim YJ. Comparative anti-inflammatory effect of extract from novel Korean strawberry cultivars (Fragaria × ananassa) on lipopolysaccharide-induced RAW264.7 macrophages and mouse model. J Sci Food Agric 2024; 104:2272-2283. [PMID: 37947475 DOI: 10.1002/jsfa.13115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/25/2023] [Accepted: 11/10/2023] [Indexed: 11/12/2023]
Abstract
BACKGROUND Dietary interventions are crucial in modulating inflammation in humans. Strawberries are enjoyed by people of different ages as a result of their attractive phenotype and taste. In addition, the active compounds in strawberries may contribute to the reduction of inflammation. When developing new strawberry cultivars to address agricultural and environmental threats, the bioactivity of strawberries must be improved to maintain their health benefits. RESULTS We determined the phytochemical contents of extracts from a new Korean strawberry cultivar, with the CN7 cultivar extract possessing the highest total polyphenol and flavonoid contents compared to the CN5 and Seolhyang cultivar extracts. The new Korean strawberry cultivars reduced the expression of inflammatory-related genes in lipopolysaccharide (LPS)-induced RAW264.7 cells via the nuclear factor-kappa B signaling pathway, indicating an anti-inflammatory effect. The CN7 cultivar showed greater bioactivity potential and the highest ellagic acid content; hence, we assessed the effect of the CN7 cultivar in an LPS-stimulated mouse model. The CN7 cultivar treatment demonstrated its effectiveness in reducing inflammation via the downregulation of inflammatory cytokines secretion and gene expression. CONCLUSION The results obtained in the present study have revealed the observable differences of the newly developed strawberry cultivars with Seolhyang in mitigating inflammation induced by LPS. The enhanced phytochemical content of the CN7 cultivar extract may contribute to its improved anti-inflammatory effect. Therefore, it is crucial to maintain the nutritive benefits of strawberry during the development of new cultivation. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Elsa Easter Justine
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Republic of Korea
| | - Seo-Woo Jang
- Horticultural Research Institute, Naju-si, Republic of Korea
| | - Sanghyun Lee
- Department of Plant Science and Technology, Chung-Ang University, Anseong, Republic of Korea
| | - Hyo-Jun Lee
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Republic of Korea
| | - Rong-Bo Wang
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Republic of Korea
| | - Yeon-Ju Kim
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Republic of Korea
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Cheng DY, Guo P, Sun FX, Wang XJ, Li W, Chen Q, Zhou GQ, Wang RB, Xing HC. [Clinical efficacy of entecavir combined with Biejiajian pills and its influence on TCM syndrome scores during the treatment of chronic hepatitis B with hepatic fibrosis and blood stasis syndrome]. Zhonghua Gan Zang Bing Za Zhi 2023; 31:608-613. [PMID: 37400385 DOI: 10.3760/cma.j.cn501113-20230217-00065] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Objective: To investigate the clinical efficacy of entecavir combined with Biejiajian pills and its influence on TCM syndrome scores during the treatment of chronic hepatitis B with hepatic fibrosis and blood stasis syndrome by prospective, randomized and controlled study. Methods: Patients with chronic hepatitis B with hepatic fibrosis and blood stasis syndrome were selected as the research subjects and randomly divided into a treatment group and a control group. Entecavir plus Biejiajian pills or entecavir plus a simulant of Biejiajian pills were given for 48 weeks. The changes in liver stiffness measurement (LSM) and TCM syndrome scores before and after treatment were compared between the two groups to analyze the correlation. The data between groups were analyzed by t-test/Wilcoxon rank sum test or χ(2) test. Pearson correlation coefficient was used to analyze the correlation between TCM syndrome scores and LSM values. Results: After 48 weeks of treatment, the LSM values of the two groups were significantly lower than those of the baseline (P < 0.001), liver fibrosis was significantly improved, and the LSM values of the treatment group were lower than those of the control group [(8.67 ± 4.60) kPa and (10.13 ± 4.43) kPa, t = -2.011, P = 0.049]. After 48 weeks of treatment, the TCM syndrome scores of the two groups were significantly reduced compared with the baseline (P < 0.001), and the clinical symptoms were significantly relieved, and the total effective rates of the improvement of the TCM syndrome scores in the two groups were 74.19% and 72.97%, respectively, but the differences between the groups were not statistically significant (χ(2) = 0.013, P = 0.910). Correlation analysis showed that there was no obvious trend between TCM syndrome scores and LSM values. There were no serious adverse reactions associated with the drug during the observation period of this study. Conclusion: Based on antiviral treatment with entecavir, regardless of whether it is combined with the Biejiajian pill, it can effectively reduce the LSM value, improve liver fibrosis, reduce TCM syndrome scores, and alleviate symptoms in patients with chronic hepatitis B with liver fibrosis and blood stasis syndrome. Compared with entecavir alone, the combined Biejia pill has greater efficacy in improving liver fibrosis and a favorable safety profile, meriting its implementation and widespread application.
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Affiliation(s)
- D Y Cheng
- Center of Liver Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - P Guo
- Department of Hepatology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing 100091, China
| | - F X Sun
- Department of Infectious Disease, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing 100010, China
| | - X J Wang
- Center of Integrated Traditional Chinese and Western Medicine, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - W Li
- Center of Liver Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Q Chen
- China Traditional Chinese Medicine Holding Co., LTD. (The original name is Sinopharm Zhonglian Pharmaceutical Co., LTD.), Wuhan 430206, China
| | - G Q Zhou
- Center of Integrated Traditional Chinese and Western Medicine, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - R B Wang
- Center of Integrated Traditional Chinese and Western Medicine, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - H C Xing
- Center of Liver Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
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Qiu RZ, Chen SP, Chi MX, Wang RB, Huang T, Fan GC, Zhao J, Weng QY. An automatic identification system for citrus greening disease (Huanglongbing) using a YOLO convolutional neural network. Front Plant Sci 2022; 13:1002606. [PMID: 36605957 PMCID: PMC9807764 DOI: 10.3389/fpls.2022.1002606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 12/07/2022] [Indexed: 06/01/2023]
Abstract
Huanglongbing (HLB), or citrus greening disease, has complex and variable symptoms, making its diagnosis almost entirely reliant on subjective experience, which results in a low diagnosis efficiency. To overcome this problem, we constructed and validated a deep learning (DL)-based method for detecting citrus HLB using YOLOv5l from digital images. Three models (Yolov5l-HLB1, Yolov5l-HLB2, and Yolov5l-HLB3) were developed using images of healthy and symptomatic citrus leaves acquired under a range of imaging conditions. The micro F1-scores of the Yolov5l-HLB2 model (85.19%) recognising five HLB symptoms (blotchy mottling, "red-nose" fruits, zinc-deficiency, vein yellowing, and uniform yellowing) in the images were higher than those of the other two models. The generalisation performance of Yolov5l-HLB2 was tested using test set images acquired under two photographic conditions (conditions B and C) that were different from that of the model training set condition (condition A). The results suggested that this model performed well at recognising the five HLB symptom images acquired under both conditions B and C, and yielded a micro F1-score of 84.64% and 85.84%, respectively. In addition, the detection performance of the Yolov5l-HLB2 model was better for experienced users than for inexperienced users. The PCR-positive rate of Candidatus Liberibacter asiaticus (CLas) detection (the causative pathogen for HLB) in the samples with five HLB symptoms as classified using the Yolov5l-HLB2 model was also compared with manual classification by experts. This indicated that the model can be employed as a preliminary screening tool before the collection of field samples for subsequent PCR testing. We also developed the 'HLBdetector' app using the Yolov5l-HLB2 model, which allows farmers to complete HLB detection in seconds with only a mobile phone terminal and without expert guidance. Overall, we successfully constructed a reliable automatic HLB identification model and developed the user-friendly 'HLBdetector' app, facilitating the prevention and timely control of HLB transmission in citrus orchards.
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Affiliation(s)
| | | | | | | | | | | | - Jian Zhao
- *Correspondence: Jian Zhao, ; Qi-Yong Weng,
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Mahtani K, Parker M, Wang RB, Maclean E. 1051 EMERGENCY PACEMAKER IMPLANTATION IN NONAGENARIANS: IMPACT OF FRAILTY ON OPERATOR DECISION-MAKING AND PATIENT OUTCOMES. Age Ageing 2022. [DOI: 10.1093/ageing/afac126.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Complete heart block (CHB) is a time-critical emergency. In frail patients with CHB, the absence of test results or a comprehensive history can challenge operator decision-making; in particular, minimal data exists as to the prognostic impact of single versus dual chamber pacing in this group. In patients over 90 years of age presenting with CHB, we examined the prognostic value of parameters obtained from bedside examination, and analysed the impact of single versus dual chamber pacemakers on mortality.
Method
Data were extracted from 2016–2019. Bedside covariates were age, sex, previous cardiac surgery, atrial rhythm, LV systolic function, syncope at presentation, QRS duration, and Rockwood frailty score. Cox-proportional hazards regression examined associations with all-cause mortality and cardiac death, determined from electronic records and death certificates (adjusted HR, 95% CI).
Results
205 patients were included (age 92.3 ± 2.3 years, 45.4% male). Mortality was 13.8% at 90 days and 27.2% at 27.1 ± 16.7 months. The independent predictors of mortality were pre-procedural QRS duration >130 ms (HR 2.4 (1.4–4.1) p = 0.001), age (HR 1.07 (1.02–1.15) p = 0.004), AF (HR 2.0 (1.1–3.6) p = 0.02), and Rockwood score (HR 1.2 (1.02–2.6), p = 0.043). Sex, syncope at presentation, LV function or previous cardiac surgery did not predict mortality (all p > 0.1). In a subset of 168 patients without AF, 30 (17.8%) received single chamber pacemakers. Whilst these patients were more frail than those receiving dual chamber pacemakers (Rockwood scores: 5.2 ± 1.7 vs 4.3 ± 1.1, p = 0.025), implantation of a single chamber pacemaker was independently associated with cardiac death when adjusting for frailty and co-morbidities (HR 6 (1.4–26.4), p = 0.018).
Conclusion
Nonagenarians undergoing emergency pacemaker implantation have a reasonable prognosis. Data ascertained at the bedside can help predict survival, however—when adjusting for frailty and co-morbidities—dual chamber pacing may confer an independent mortality benefit over single chamber pacing in this group.
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Affiliation(s)
- K Mahtani
- Barts and the London School of Medicine and Dentistry, Queen Mary University of London
| | - M Parker
- Barts and the London School of Medicine and Dentistry, Queen Mary University of London
| | - R B Wang
- Barts and the London School of Medicine and Dentistry, Queen Mary University of London
| | - E Maclean
- Barts and the London School of Medicine and Dentistry, Queen Mary University of London
- Barts Heart Centre, St. Bartholomew’s Hospital
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Zhou LN, Wu N, Zhao SJ, Yang L, Wang YL, Wang RB, Yang SX. [HRCT features differentiate synchronous multiple primary lung adenocarcinomas from intrapulmonary metastases]. Zhonghua Zhong Liu Za Zhi 2020; 42:449-455. [PMID: 32575939 DOI: 10.3760/cma.j.cn112152-20200227-00126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the high resolution CT (HRCT) features of lung adenocarcinoma for differentiating synchronous multiple lung adenocarcinoma from lung adenocarcinoma with intrapulmonary metastasis. Methods: The clinical and imaging features of 131 lesions from 62 patients of synchronous multiple primary lung adenocarcinoma (primary group) and 67 lesions from 31 patients of lung adenocarcinoma with intrapulmonary metastases (metastasis group) were retrospectively analyzed. According to the types of lesion, including pure ground glass nodule (pGGN), mixed ground glass nodule (mGGN) and solid nodule (SN), the image feature matching types of patients were divided into 7 types. The differences of image feature matching types between the primary group and the metastasis group were compared. Multiple lesions in the lung of patients were classified into the main lesion and the concomitant lesions according to their size. The differences including the size of the main lesion and the concomitant lesion (long diameter of nodule, long diameter of solid component in nodule), whether it contains ground glass components in nodule, shape, lobulation, margin, spiculation, bubble-like lucency, pleural retraction and pleural attachment were recorded and analyzed. The differences of image features of main lesion and the concomitant lesion in the primary group and the metastasis group were compared. Results: The image feature matching types of pGGN + mGGN and mGGN + mGGN were more common in the primary group, and the ground glass component contained pGGN or mGGN was accounted for 62.9%(39/62). At least one lesion containing the ground glass component was accounted for 96.8% (60/62). There were two types in metastatic groups, mGGN+ SN and SN+ SN accounting for 6.5% (2/31) and 93.5% (29/31), respectively. There were significant differences in image feature matching types between the primary group and metastatic group (P<0.01). Univariate analysis of the main lesions between the two groups showed that the gender, smoking history, long diameter of the main lesion, long diameter of the solid component, the ground glass component and pleural attachment were statistically different (P<0.05). Further analysis by multivariate logistic regression showed that the male (OR=5.742, P=0.010), SN (OR=41.291, P<0.01) and pleural attachment (OR=9.288, P=0.001) were the three significant risk factors associated with the main lesions in metastasis group.The most common concomitant lesions in primary group were pGGN, containing the ground glass component. However, all of the concomitant lesions in the metastatic group were SN (P<0.01), showing round lesions with well-defined margin, attaching the pleura (P<0.05). Conclusions: The HRCT features of lung adenocarcinoma can differentiate synchronous multiple lung adenocarcinoma from lung adenocarcinoma with intrapulmonary metastasis. At least one lesion contains ground glass components (pGGN or mGGN) in synchronous multiple primary lung adenocarcinoma, while SN is more common in lung adenocarcinoma with lung metastasis. Lung cancer with intrapulmonary metastasis can be considered when the main lesion is SN with pleural attachment and the intrapulmonary accompanying lesion is also solid nodules without lobular, speculation and bubble-like lucency.
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Affiliation(s)
- L N Zhou
- Department of Diagnostic Imaging, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - N Wu
- PET-CT Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S J Zhao
- Department of Diagnostic Imaging, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - L Yang
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y L Wang
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - R B Wang
- Department of Diagnostic Imaging, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S X Yang
- Department of Diagnostic Imaging, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Baek NI, Lee YG, Wang R, Kim HG, Lee DY, Kim YJ. Anwulignan from the fruits of Schisandra chinensis and its cytotoxicity against human cancer cell lines. Pharmacogn Mag 2020. [DOI: 10.4103/pm.pm_208_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Wang RB, Tian HL, Wang HT, Li GS. [Development of indel markers for molecular authentication of Panax ginseng and P. quinquefolius]. Zhongguo Zhong Yao Za Zhi 2019; 43:1441-1445. [PMID: 29728034 DOI: 10.19540/j.cnki.cjcmm.20180201.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Indexed: 11/18/2022]
Abstract
Panax ginseng and P. quinquefolius are two kinds of important medicinal herbs. They are morphologically similar but have different pharmacological effects. Therefore, botanical origin authentication of these two ginsengs is of great importance for ensuring pharmaceutical efficacy and food safety. Based on the fact that intron position in orthologous genes is highly conserved across plant species, intron length polymorphisms were exploited from unigenes of ginseng. Specific primers were respectively designed for these two species based on their insertion/deletion sequences of cytochrome P450 and glyceraldehyde 3-phosphate dehydrogenase, and multiplex PCR was conducted for molecular authentication of P.ginseng and P. quinquefolius. The results showed that the developed multiplex PCR assay was effective for molecular authentication of P.ginseng and P. quinquefolius without strict PCR condition and the optimization of reaction system.This study provides a preferred ideal marker system for molecular authentication of ginseng,and the presented method can be employed in origin authentication of other herbal preparations.
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Affiliation(s)
- Rong-Bo Wang
- School of Pharmacy, Yantai University, Yantai 264005, China
| | - Hui-Li Tian
- College of Life Science, Yantai University, Yantai 264005, China
| | - Hong-Tao Wang
- College of Life Science, Yantai University, Yantai 264005, China
| | - Gui-Sheng Li
- School of Pharmacy, Yantai University, Yantai 264005, China
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Yan CQ, Wang RB, Liu HC, Jiang Y, Li MC, Yin SP, Xiao TY, Wan KL, Rang WQ. [Application of ARIMA model in predicting the incidence of tuberculosis in China from 2018 to 2019]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:633-637. [PMID: 31238610 DOI: 10.3760/cma.j.issn.0254-6450.2019.06.006] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Autoregressive integrated moving average (ARIMA) model was used to predict the incidence of tuberculosis in China from 2018 to 2019, providing references for the prevention and control of pulmonary tuberculosis. Methods: The monthly incidence data of tuberculosis in China were collected from January 2005 to December 2017. R 3.4.4 software was used to establish the ARIMA model, based on the monthly incidence data of tuberculosis from January 2005 to June 2017. Both predicted and actual data from July to December 2017 were compared to verify the effectiveness of this model, and the number of tuberculosis cases in 2018-2019 also predicted. Results: From 2005 to 2017, a total of 13 022 675 cases of tuberculosis were reported, the number of pulmonary tuberculosis patients in 2017 was 33.68% lower than that in 2005, and the seasonal character was obvious, with the incidence in winter and spring was higher than that in other seasons. According to the incidence data from 2005 to 2017, we established the model of ARIMA (0,1,2)(0,1,0)(12). The relative error between the predicted and actual values of July to December 2017 fitted by the model ranged from 1.67% to 6.80%, and the predicted number of patients in 2018 and 2019 were 789 509 and 760 165 respectively. Conclusion: The ARIMA (0, 1, 2)(0, 1, 0)(12) model well predicted the incidence of tuberculosis, thus can be used for short-term prediction and dynamic analysis of tuberculosis in China, with good application value.
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Affiliation(s)
- C Q Yan
- School of Public Health, University of South China, Hengyang 421001, China
| | - R B Wang
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H C Liu
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Jiang
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - M C Li
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - S P Yin
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - T Y Xiao
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - K L Wan
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - W Q Rang
- School of Public Health, University of South China, Hengyang 421001, China
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Zhang QF, Wang RB, Zheng B, Xia ZG, Zhou SS. [Analysis on the performance evaluation of the Global Fund Malaria Programme in China from 2003 to 2013]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 51:427-431. [PMID: 28464594 DOI: 10.3760/cma.j.issn.0253-9624.2017.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the performance of the 5 Global Fund Malaria Programmes in China from 2003 to 2013. Methods: All of the proposals, summaries, progress reports, survey reports, Monitoring& Evaluation reports, and performance rating reports of the 5 Global Fund Malaria Programmes in China and the epidemic data of program areas were collected for statistical analysis from 2012 to 2014. Symposiums were held with relevant experts from national and provincial Centers for Disease Control and Prevention, program managers and staffs from national and provincial Global Fund Malaria Programme offices. The completion of the relevant programme indicators (including the general grant information such as program areas, beneficiaries and funding; the implementation of malaria control measures; the performance of malaria control measures; the malaria incidence in the program areas; the prevalence of malaria parasites; and program management and performance evaluation) were analyzed, and the results: of the symposiums were summarized. Results The implementation period of the 5 Global Fund Malaria Programs were as follows: Round 1 from 2003 to 2008, Round 5 from 2006 to 2010, Round 6 from 2007 to 2012, Round 10 from 2012 to 2013, and National Strategy Application (NSA) from 2010 to 2012. Under the support of all the Global Fund Malaria Programs, a total of 11 936 726 fever cases received microscopic tests, 1 485 915 confirmed and suspected malaria cases were treated, 1 579 773 Long Lasting Insecticide-treated Nets were distributed, 3 414 633 regular nets were treated by insecticide, 40 298 284 primary and middle school students received health education on malaria control. Compared with the baseline value, the completion rates of each indicator increased after the implementation of the programs. The growth value ranged from 12.83% to 83.11%, among which the biggest growth was the value of the indicator'Percentage of households with at least one LLIN/ITN in target areas', and it increased from 9.2% (baseline value of 2006) to 92.31% (value of 2012). The malaria incidence in program areas has dropped significantly year by year, the annual reported malaria incidence in Yunnan and Hainan provinces decreased from 1 950/100 000, 3 850/100 000 in 2002 to 3.31/100 000, 0.15/100 000 in 2012, the P. falciparum malaria incidence in target counties in Hainan province decreased from 90.6/100 000 in 2002 to 0/100 000 in 2012. As from the implementation of NSA grant in 2010 to 2012, the annual reported malaria incidence in 92% of the 75 Type 1 counties was less than 1 per 10 000, 60.00% of Type 1 counties and 98.69% of the 687 Type 2 counties reported zero locally transmitted malaria cases. The Global Fund Secretariat had conducted a total of 37 performance evaluations, of which 9 have been rated as A1, 4 rated as A2, 19 rated as B1 and 5 rated as B1. Conclusions: The Global Fund Malaria Program in China has been closely integrated with the goal and task of National Malaria Control Program, reducing malaria burden in target areas, and pushing Chinese malaria control efforts to move from control to elimination.
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Affiliation(s)
- Q F Zhang
- National Institute of Parasitic Disease, Chinese Center for Disease Control and Prevention, WHO Collaborating Centre for Topical Diseases, Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai 200025, China
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Li C, Li GL, Luo Q, Li SJ, Wang RB, Lou YL, Lyu JX, Wan KL. [A preliminary study on the molecular characteristics of D-cycloserine resistance of Mycobacterium tuberculosis]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 38:240-243. [PMID: 28231674 DOI: 10.3760/cma.j.issn.0254-6450.2017.02.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the relationship between D-cycloserine resistance and the gene mutations of alrA, ddlA and cycA of Mycobacterium (M.) tuberculosis, as well as the association between D-cycloserine resistance and spoligotyping genotyping. Methods: A total of 145 M. tuberculosis strains were selected from the strain bank. D-cycloserine resistant phenotypes of the strains were determined by the proportion method and the minimal inhibitory concentration was determined by resazurin microtiter assay. PCR amplification and DNA direct sequencing methods were used for the analysis of gene mutations. Relationship between the resistance phenotype and genotype was analyzed by chi-square test. Results: Of the 145 clinically collected strains, 24 (16.6%) of them were D-cycloserine resistant and 121 (83.4%) were sensitive. There were only synonymous mutations noticed on alrA, ddlA and cycA in sensitive strains. Of the 24 D-cycloserine resistant strains, 3 (12.5%) isolates' cycA and 1 (4.2%) isolates' alrA happened to be non-synonymous mutations, in which the codes were 188, 318 and 508 of cycA, and 261 of alrA, respectively. Results on drug sensitivity tests confirmed the minimal inhibitory concentration of the mutant strains were all increased to some degrees. The D-cycloserine resistant rates of 88 Beijing genotype and 57 non-Beijing genotype strains were 20.5% and 10.5% , respectively, but with no statistically significant difference (χ(2) =2.47, P>0.05). Conclusions: The non-synonymous mutations of alrA and cycA might contribute to one of the mechanisms of M. tuberculosis D-cycloserine resistance. M. tuberculosis Beijing genotype or non-Beijing genotype was not considered to be associated with the D-cycloserine resistance.
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Affiliation(s)
- C Li
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - G L Li
- Tuberculosis Branch, State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Q Luo
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - S J Li
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - R B Wang
- Tuberculosis Branch, State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y L Lou
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - J X Lyu
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - K L Wan
- Tuberculosis Branch, State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
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Zhou GQ, Meng H, Wang JR, Sun FX, Wang XJ, Wang RB, Wang XB. Functional polymorphisms in microRNA gene and hepatitis B risk among Asian population: a meta-analysis. Genet Mol Res 2015; 14:4767-77. [PMID: 25966251 DOI: 10.4238/2015.may.11.9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Genetic mutations in microRNA gene can alter expression, which may interact to increase the risk of developing various diseases, including hepatitis B. However, published results are inconclusive or ambiguous. The aim of this review and meta-analysis is to more precisely estimate the association between polymorphisms in microRNA genes and hepatitis B risk. A digital search was performed of the MEDLINE EMBASE, CNKI, and CBM databases to identify relevant articles published up to February 18, 2014. Ten case-control studies were included, with a total of 6042 patients with hepatitis B and 6834 healthy controls. Nine single-nucleotide polymorphisms in the miRNA gene were examined, including miR-34b/c [rs4938723 (T>C)], miR-196a-2 [rs11614913 (C>T)], miR-146a [rs2910164 (G>C)], miR-499 [rs3746444 (T>C)], miR-122 [rs3783553 (ins/del)], miR-149 [rs2292832 (C>T)], miR-106b-25 [rs999885 (A>G)], miR-let-7c [rs6147150 (ins/del)], and miR-218 [rs11134527 (A>G)]. The meta-analysis results indicated that the miR-196a-2*T, miR-122*del, miR-106b-25*A, and miR-let-7c*del alleles/carriers increase the risk of hepatitis B among the Asian population. However, the miR-146a, miR- 499, miR-149, miR-218, and miR-34b/c polymorphisms may not be linked with the risk of hepatitis B. Further investigations are warranted to determine the exact associations between microRNA mutations and hepatitis B susceptibility.
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Affiliation(s)
- G Q Zhou
- Center of Integrated Traditional Chinese and Western Medicine, Beijing Ditan Hospital Affiliated to Capital Medical University, Beijing, China
| | - H Meng
- Center of Integrated Traditional Chinese and Western Medicine, Beijing Ditan Hospital Affiliated to Capital Medical University, Beijing, China
| | - J R Wang
- Center of Integrated Traditional Chinese and Western Medicine, Beijing Ditan Hospital Affiliated to Capital Medical University, Beijing, China
| | - F X Sun
- Center of Integrated Traditional Chinese and Western Medicine, Beijing Ditan Hospital Affiliated to Capital Medical University, Beijing, China
| | - X J Wang
- Center of Integrated Traditional Chinese and Western Medicine, Beijing Ditan Hospital Affiliated to Capital Medical University, Beijing, China
| | - R B Wang
- Center of Integrated Traditional Chinese and Western Medicine, Beijing Ditan Hospital Affiliated to Capital Medical University, Beijing, China
| | - X B Wang
- Center of Integrated Traditional Chinese and Western Medicine, Beijing Ditan Hospital Affiliated to Capital Medical University, Beijing, China
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Wang RB, Yang JK, Lin C, Zhang Y, Zhang KQ. Purification and characterization of an extracellular serine protease from the nematode-trapping fungus Dactylella shizishanna. Lett Appl Microbiol 2006; 42:589-94. [PMID: 16706897 DOI: 10.1111/j.1472-765x.2006.01908.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [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: 11/30/2022]
Abstract
AIMS To evaluate the production of an extracellular serine protease by Dactylella shizishanna and its potential as a pathogenesis factor. METHODS AND RESULTS An extracellular alkaline serine protease (Ds1) was purified and characterized from the nematode-trapping fungus D. shizishanna using cation-exchange chromatography and hydrophobic interaction chromatography. The molecular mass of the protease was approximately 35 kDa estimated by SDS-PAGE. The optimum activity of Ds1 was at pH 10 and 55 degrees C (over 30 min). The purified protease could degrade purified cuticle of Penagrellus redivivus and a broad range of protein substrates. The purified protease was highly sensitive to phenylmethyl sulfonyl fluoride (PMSF) (0.1 mmol l(-1)), indicating it belonged to the serine protease family. The N-terminal amino acid residues of Ds1 are AEQTDSTWGL and showed a high homology with Aozl and PII, two serine proteases purified from the nematode-trapping fungus Arthrobotrys oligospora. CONCLUSIONS Nematicidal activity of D. shizishanna was partly related to its ability to produce extracellular serine protease. SIGNIFICANCE AND IMPACT OF THE STUDY In this report, we purified a new serine protease from D. shizishanna and provided a good foundation for future research on infection mechanism.
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Affiliation(s)
- R B Wang
- Laboratory for Conservation and Utilization of Bio-resources, Yunnan University, Kunming, China
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13
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Abstract
BACKGROUND From the deductive point of view, neurotransmitter receptors can be divided into categories such as cholinergic (muscarinic, nicotinic), adrenergic (alpha- and beta-), dopaminergic, serotoninergic (5-HT1 approximately 5-HT5), and histaminergic (H1 and H2). Selective agonists and antagonists of each receptor subtype can have specific useful therapeutic applications. For understanding the molecular mechanisms of action, an inductive method of analysis is useful. OBJECTIVE The aim of the present study is to examine the structure-activity relationships of agents acting on G-protein coupled receptors. METHOD Representative sets of G-PCR agonists and antagonists were identified from the literature and Medline [P.M. Walsh (2003) Physicians' Desk Reference; M.J. O'Neil (2001) The Merck Index]. The molecular weight (MW), calculated logarithm of octanol/water partition coefficient (C log P) and molar refraction (CMR), dipole moment (DM), E(lumo) (the energy of the lowest unoccupied molecular orbital, a measure of the electron affinity of a molecule and its reactivity as an electrophile), E(homo) (the energy of the highest occupied molecular orbital, related to the ionization potential of a molecule, and its reactivity as a nucleophile), and the total number of hydrogen bonds (H(b)) (donors and receptors), were chosen as molecular descriptors for SAR analyses. RESULTS The data suggest that not only do neurotransmitters share common structural features but their receptors belong to the same ensemble of G-protein coupled receptor with seven to eight transmembrane domains with their resultant dipoles in an antiparallel configuration. Moreover, the analysis indicates that the receptor exists in a dynamic equilibrium between the closed state and the open state. The energy needed to open the closed state is provided by the hydrolysis of GTP. A composite 3-D parameter frame setting of all the neurotransmitter agonists and antagonists are presented using MW, Hb and mu as independent variables. CONCLUSION It appears that all neurotransmitters examined in this study operate by a similar mechanism with the G-protein coupled receptors.
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MESH Headings
- Adrenergic Agonists/chemistry
- Adrenergic Agonists/classification
- Adrenergic Antagonists/chemistry
- Adrenergic Antagonists/classification
- Chemical Phenomena
- Chemistry, Physical
- Cholinergic Agonists/chemistry
- Cholinergic Agonists/classification
- Cholinergic Antagonists/chemistry
- Cholinergic Antagonists/classification
- Dopamine Agonists/chemistry
- Dopamine Agonists/classification
- Dopamine Agonists/pharmacology
- Dopamine Antagonists/chemistry
- Dopamine Antagonists/classification
- Dopamine Antagonists/pharmacology
- Histamine Agonists/chemistry
- Histamine Agonists/classification
- Histamine Agonists/pharmacology
- Histamine Antagonists/chemistry
- Histamine Antagonists/classification
- Histamine Antagonists/pharmacology
- Models, Biological
- Molecular Structure
- Neurotransmitter Agents/agonists
- Neurotransmitter Agents/antagonists & inhibitors
- Neurotransmitter Agents/chemistry
- Receptors, Adrenergic/classification
- Receptors, Adrenergic/drug effects
- Receptors, Adrenergic/physiology
- Receptors, Cholinergic/classification
- Receptors, Cholinergic/drug effects
- Receptors, Cholinergic/physiology
- Receptors, G-Protein-Coupled/drug effects
- Receptors, G-Protein-Coupled/physiology
- Receptors, Histamine/classification
- Receptors, Histamine/drug effects
- Receptors, Histamine/physiology
- Serotonin Antagonists/chemistry
- Serotonin Antagonists/classification
- Serotonin Antagonists/pharmacology
- Serotonin Receptor Agonists/chemistry
- Serotonin Receptor Agonists/classification
- Serotonin Receptor Agonists/pharmacology
- Structure-Activity Relationship
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Affiliation(s)
- C L Kuo
- School of Pharmacy, University of Southern California, 1985 Zonal Avenue, Los Angeles, CA 90089-9121, USA
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14
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Abstract
OBJECTIVE A large number of structurally and functionally diverse compounds act as substrates or modulators of p-glycoprotein (p-gp). Some of them possess multiple drug resistance (MDR)-reversing activity, but only a small number of them have entered clinical study. In order to uncover the factors which exert a significant impact on the interaction between substrates/modulators and p-gp, we have performed structure-activity relationship (SAR) analyses, including molecular modelling, two-dimensional (2D) and three-dimensional (3D) parameter-frame-setting analysis, quantitative structure activity relationship (QSAR) analysis among substrates/modulators, as well as clinically promising MDR-reversing agents. METHODS The physicochemical parameters C log P, CMR and all regression equations were derived by using C log P version 4.0 and the latest CQSAR software, respectively. Molecular modelling and all other parameter calculations were performed by using HyperChem version 5.0 program, after geometry optimization and energy minimization using the AM1 semiempirical method. RESULTS SAR analyses indicate that MDR reversal activity is correlated with the lipophilicity (C log P), molecular weight (log Mw), longest chain (Nlc) of the molecule and the energy of the highest occupied orbital (Ehomo). In addition, the presence of a basic tertiary nitrogen atom in the structure is also an important contributor to p-gp inhibitory activity. Some separation in space is achieved for different subsets of p-gp substrates and inhibitors using Nlc, C log P and Ehomo as three independent parameters in the 3D-parameter-frame setting. CONCLUSION A highly effective p-gp modulator candidate should possess a log P value of 2.92 or higher, 18-atom-long or longer molecular axis, and a high Ehomo value, as well as at least one tertiary basic nitrogen atom. The results obtained may be useful in explaining drug-p-gp interactions for different compounds, including drug interactions and the development of new MDR chemosensitizers.
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Affiliation(s)
- R B Wang
- School of Pharmacy, Shandong University, Jinan, People's Republic of China
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Abstract
A gas chromatographic method for monitoring diacetyl guanfubase A in plasma is described. The procedure involved a single solvent extraction of drug from rabbit plasma into ethyl acetate with guanfubase A as an internal standard. The extract was analyzed subsequently on a gas chromatograph equipped with a hydrogen flame ionization detector. The recovery was 86.43% +/- 6.90% (+/- SD); the RSD of within-day and between-day was 2.81%-5.26% and 5.22%-8.24%, respectively; the regression line was linear over the concentration range of 25-200 micrograms/mL, the limit of detection was 10 micrograms/mL. No endogeneous interference was found in chromatograms of the biological samples. This method was applied to the pharmacokinetic study of diacetyl guanfubase A in rabbits.
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Affiliation(s)
- W H Wang
- College of Pharmacy, Shandong Medical University, Jinan, People's Republic of China
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16
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Abstract
We reviewed the clinical manifestations of 53 episodes of theophylline intoxication in 50 patients over a one year study period, in order to identify the specific features as they presented to the Emergency Department (ED). There was a trend to an increase in the serum theophylline concentration with increased severity of clinical features, but the difference between the mild and the moderate cases was not statistically significant. The most common symptoms and signs were gastrointestinal complaints, sinus tachycardia, and atrial arrhythmias. Mixed atrial and ventricular arrhythmias, which are rarely mentioned as a specific feature of theophylline intoxication, were found in 16% of our patients and accounted for 29% of the cardiovascular manifestations. Four patients developed rhabdomyolysis, which presumably was secondary to a seizure or profound hypokalaemia. Cases of theophylline intoxication presenting to the ED had higher serum concentrations of theophylline and tended to have more severe toxicity than those patients in the non-ED group. Delayed diagnosis may contribute to the severity of the outcome, since severe cases in the ED were usually suspected to have developed intoxication at some point later in the stay in the ED than at the time of presentation, or after admission to the hospital, thus permitting the occurrence of an additional iatrogenic component to the intoxication. They also complained of symptoms not associated with the theophylline toxicity, which may have diverted the physician's attention from recognizing this concurrent problem.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- J Tsai
- Department of Emergency, Veterans General Hospital, Taipei, Taiwan
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Lee SF, Yang WC, Shann TY, Lui WY, Wang RB. Comparison of nonspecific radioimmunoassay, high-performance liquid chromatography, and fluorescence polarization immunoassay for cyclosporine monitoring in renal transplantation. Ther Drug Monit 1991; 13:152-6. [PMID: 2053123 DOI: 10.1097/00007691-199103000-00011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Three methods, i.e., nonspecific radioimmunoassay (RIA; Incstar), fluorescence polarization immunoassay (FPIA; TDx Abbott), and high-performance liquid chromatography (HPLC), have been used for monitoring cyclosporine blood levels in renal transplantation patients. The levels obtained from 135 samples showed a modest correlation between RIA and HPLC, FPIA and HPLC, RIA and FRIA. The mean ratios of RIA to HPLC, FPIA to HPLC, and RIA to FPIA were 2.96, 4.14, and 0.73. The significant variations in cyclosporine levels result from the cross-reaction of antibody with some cyclosporine metabolites, by which these two methods often overestimate the true blood cyclosporine level. HPLC is a more effective and reliable method for pharmacokinetic studies and blood level monitoring of cyclosporine in clinical practice.
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Affiliation(s)
- S F Lee
- Division of Clinical Pharmacy, Veterans General Hospital-Taipei, Taiwan, Republic of China
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18
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Qiao WJ, Wang RB, Li JF. Determination of trace selenium in human body by anodic stripping voltammetry at gold-disc electrode. J Tongji Med Univ 1990; 10:252-6. [PMID: 2098584 DOI: 10.1007/bf02887941] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
For determination of trace Se we used high-pressure wet digester to pretreat the specimens obtained from the human body. This method is very effective in preventing loss of Se by volatilization which often occurs in the sample pretreatment. We studied the method of using anodic stripping voltammetry at gold-disc electrode to measure the trace Se present in the human body and found it to be the optimal procedure. The detection limitation was about 2 x 10(-8) g/L, the recovery rate of Se about 96.6 +/- 6.7% (chi +/- s), and the coefficient of variation CV = 7.0%.
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Affiliation(s)
- W J Qiao
- Department of Chemistry, Tongji Medical University, Wuhan
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Wang RB, Liu LT, Yiu CH, Chang TY. Carbamazepine drug interactions: the influence of concurrent drug therapy on serum concentrations of carbamazepine and its epoxide metabolite. Zhonghua Yi Xue Za Zhi (Taipei) 1990; 45:222-32. [PMID: 2168269] [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
The influence of concurrent drug therapy (phenytoin, valproate, phenobarbital, primidone) on serum concentrations of total and free carbamazepine (CBZ) and its active metabolite carbamazepine-10, 11-epoxide (CBZ-E) in 135 epileptic patients was studied. Serum CBZ and CBZ-E levels were analyzed by high performance liquid chromatography, whereas serum levels of the anticonvulsants were determined by fluorescence polarization immunoassay. Ultrafiltration was used to separate the free drugs from the protein-bound drugs in serum. Patients were divided into five groups according to the medication they received. Linear regression analyses revealed that concurrent drug therapy affected the metabolic rate of CBZ and CBZ-E in various ways. In patients on CBZ monotherapy, 78.3% of CBZ and 52.4% of CBZ-E were bound to plasma proteins. The total serum CBZ and CBZ-E concentrations significantly correlated with their respective free levels in serum. Compared with the CBZ monotherapy group, patients receiving concurrent drug therapy showed higher CBZ clearance and had elevated CBZ-E/CBZ ratios. Although the decrease in the total CBZ concentration depended on the simultaneous phenytoin and valproate concentrations (p less than 0.05), the serum levels of phenobarbital and primidone appeared to have no significant influence on the CBZ concentration. Since great interindividual variations were found in the serum concentration after a given dose, routine monitoring of the CBZ and CBZ-E serum concentrations is essential in designing a safe and effective therapeutic regimen for epileptic patients, especially for those on polytherapy.
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Affiliation(s)
- R B Wang
- Department of Pharmacy, Veterans General Hospital-Taipei, R.O.C
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Xiao S, Liu QZ, Wang RB, Zhang MY, Li P. An improved method of direct chromosome preparation from chorionic villus and high resolution banding technique. Prenat Diagn 1989; 9:589-93. [PMID: 2798344 DOI: 10.1002/pd.1970090808] [Citation(s) in RCA: 4] [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: 01/02/2023]
Abstract
The trophoblast was dissociated from the underlying mesenchymal layer either with acetic acid after short-term prefixation or with mechanical power after fixation twice. The colcemid treatment time was shorted to 16 min and trypsin solution of low pH (6.2) was used for banding. By these steps, the quality of chromosome banding was greatly improved and complete standard chromosome diagnoses were made in 24 of 24 cases. With the modified technique, high resolution banding chromosomes were consistently obtained after short-term incubation.
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Affiliation(s)
- S Xiao
- Department of Biology, Harbin Medical University, China
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21
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Feng HW, Pi CM, Wang RB, Chen LC. Use of ferric ammonium sulfate in serum cholesterol determination. Clin Chem 1973; 19:121-2. [PMID: 4683356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Feng HW, Mu JY, Ku Y, Lee FS, Wang RB, Yun TK. Uterine and hepatic protein biosynthesis in estrogen-treated and thyroidectomized rats. Clin Chim Acta 1972; 42:225-8. [PMID: 4654859 DOI: 10.1016/0009-8981(72)90404-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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