1.Simultaneous Determination of Anions and Cations by Multimodal Liquid Chromatography
Muhua WANG ; Naifei ZHONG ; Mingli YE ; Zhongping HUANG ; Yan ZHU
Chinese Journal of Analytical Chemistry 2014;(10):1544-1548
A new method has been established for simultaneous determination of anions and cations in fertilizer sample by multimodal liquid chromatography with direct conductivity detection. An Acclaim Trinity P1 column based on nanopolymer silica hybrid technology with multimodal separation functional groups reversed-phase/anion-exchange/cation-exchange was used for the analysis. The chromatographic conditions were optimized and the effect ion of eluent on retention was discussed. Eight ions ( Li+, NH+4 , K+, HCOO-, NO-2 , Cl-, NO-3 and Br-) were separated and determined simultaneously by using 25 mmol/L CH3 COONa solution containing 50% acetonitrile at pH=5. 0 as mobile phase. The flow rate was 0. 50 mL/min and the temperature was 30 ℃. Under the optimum conditions, the linear ranges of the method were in the range of 0 . 5-200 mg/L for all the ions with correlation coefficient of 0 . 9997-0 . 9999 . Whereas the detection limits (S/N=3) were in the range of 0. 16-1. 72 mg/L and the relative standard deviations (RSD, n=9) were in the range of 1 . 3-2 . 5%. The method was applied to the determination of anions and cations in the fertilizer samples with satisfied results and the recoveries were in the range of 95 . 8%-103 . 8%.
2.The effect of exfoliative transurethral resection of bladder tumor with bipolar plasmakinetic system
Jianwen WANG ; Wenyi ZHANG ; Lijun GAO ; Shudong CHENG ; Huizhong YAN ; Yun ZHAO ; Muhua WANG ; Chengjia BO
Chinese Journal of Primary Medicine and Pharmacy 2015;(6):821-824
Objective To evaluate the safety and efficacy of bipolar plasmakinetic system in exfoliative tran-surethral resection of bladder tumors .Methods Clinical data of 72 patients with non muscle invasive bladder cancer (NMIBC) were retrospectively analyzed.Transurethral bipolar plasmakinetic system was used ,30°viewer,F27 outer sheath was pushed off and bladder tumor was cut .When the bladder filling state ,pushed off bladder mucosa distance from tumor basal 2cm,then electricity cut the exfoliative bladder tumor .When bladder half filling state electricity cut the base of the bladder muscle layer of bladder tumor .Results This group of 72 cases were successfully completed surgery,surgery time 37~93 min,without intraoperative bladder perforation ,slight obturator nerve reflex in 5 cases. The keeping intact pathologic specimens was good for pathological staging .Conclusion Exfoliative transurethral resection of bladder tumors with bipolar plasma is a safe , practical and effective way of operation , which can avoid severe obturator reflex occurred in the operation , and greatly reduce the occurrence of bladder perforation , without TURS,surgical removal of the pathological specimens is specification .
3.In vitro co-culture of human adipose-derived mesenchymal stem cells and T-lymphocytes from patients with aplastic anemia
Liang WANG ; Min XU ; Muhua ZHANG ; Jian XING ; Xia ZHAO ; Fang HAN ; Guoqiang LIU
Chinese Journal of Tissue Engineering Research 2014;(10):1603-1608
BACKGROUND:Clinical infusion of hematopoietic stem cells and mesenchymal stem cells for treatment of aplastic anemia has been reported. OBJECTIVE:To investigate the effect of human adipose-derived mesenchymal stems cells on the secretion function of T lymphocytes of aplastic anemia patients. METHODS:Human adipose-derived mesenchymal stems cells were extracted from healthy human adipose tissues. T-lymphocytes were harvested from peripheral blood of patients with aplastic anemia by density gradient centrifugation. Human adipose-derived mesenchymal stems cells were co-cultured with T-lymphocytes. The levels of interleukin-2, interleukin-4, interleukin-10 and interferon-γwere detected by enzyme linked immunosorbent assay. T-bet and GATA-3 levels were examined by real-time PCR and western blot. RESULTS AND CONCLUSION:The levels of Th1 type cytokines interferon-γand interleukin-2 in the co-culture group were significantly lower than those in the T-lymphocyte group (P<0.05). But the levels of Th2 type cytokines interleukin-4 and interleukin-10 in the co-culture group were significantly higher than those in the T-lymphocyte group (P<0.05). The T-bet mRNA and protein levels in the co-culture group were significantly lower than those in the T-lymphocyte group, while the GATA-3 mRNA and protein levels were significantly higher in the co-culture group. Human adipose-derived mesenchymal stems cells can mediate an immunoregulation effect on T-lymphocytes of aplastic anemia patients in vitro, which is possibly related with the inhibition of Th1-dominant response due to the disorder of T-bet and GATA-3 gene expression.
4.Detection of Cd in Chinese Cabbage by Laser Induced Breakdown Spectroscopy Coupled with Multivariable Selection
Hui YANG ; Lin HUANG ; Muhua LIU ; Tianbing CHEN ; Caihong WANG ; Mingyin YAO
Chinese Journal of Analytical Chemistry 2017;45(2):238-244
Heavy metal residue in vegetables is a big concern in the whole world.The aim of this work is to explore the effect of multivariable selection on analyzing Cd in Chinese cabbage polluted in lab by collecting the spectra of laser induced breakdown spectroscopy (LIBS) from the samples.At the same time,the actual Cd content in samples was obtained by anodic stripping voltammetry (ASV).The LIBS spectral range in partial least square (PLS) model was screened by standard normal variable transformation (SNV),first derivative (FD),second derivative (SD) and center treatment (CT) for preprocessing spectra and the optimized method was used for the analysis of interval partial least square (iPLS) and synergy interval partial least square (SiPLS).The results indicated that the method of CT was the best as a comparison with PLS,iPLS and SiPLS.And the intervals of wavelength were 214.72-215.82 nm,215.88-216.97 nm and 225.08 -226.35 nm by utilizing the optimized SiPLS.Here the root mean square error of cross validation (RMSECV) between real content and predicted ones was 1.487,the root mean squared error of prediction (RMSEP) was 1.094,the correlation coefficient (R) was 0.9942,and the average relative error (ARE) was 11.60%.The results displayed that LIBS could predict Cd in vegetables by multivariable selection of SiPLS and the accuracy could meet the requirement of rapid and green analysis of Cd in vegetables.
5.Pharmaceutical Care for One Patient with Ⅳ Degree Myelosuppression Treated with the Combination of Chinese and Western Medicines
Bei HUANG ; Xiaojian XIA ; Qiwu SUN ; Qingping SHI ; Minghong BI ; Muhua WANG
China Pharmacist 2017;20(8):1408-1411
Objective: To investigate the breakthrough points and methods of pharmaceutical care performed by clinical pharmacists for chemotherapy-induced Ⅳ degree myelosuppression.Methods: One advanced lung adenocarcinoma patient suffering from chemotherapy-induced Ⅳ degree myolosuppression was selected as the example, clinical pharmacists provided suggestions on the chemotherapy regimen, assisted physicians in making reasonable treatment plan and implemented comprehensive pharmaceutical care for the patient.Results: Clinical pharmacists played a positive role in the clinical treatment through the comprehensive pharmaceutical care in oncology department.Conclusion: With the professional knowledge of pharmacy, clinical pharmacists can improve the level of clinical rational drug use.
6.A survey of dietary iodine intake among residents in Fujian Province
Zhihui CHEN ; Min HU ; Xi LIN ; Jiani WU ; Shuguang LIN ; Zhaohe LIN ; Muhua WANG
Chinese Journal of Endemiology 2014;(4):414-418
Objective To survey the dietary iodine intake among residents in the coastal province of Fujian after universal salt iodization. Methods Using multi-stage stratified random sampling method, four different geographic areas of coastal cities, inland cities, coastal rural and inland rural areas were selected; 3 counties (cities, districts) were selected from each area; 30 families were selected from each of those counties (cities, districts). Total dietary study method was applied to investigate the basic information, all food and water intake during the investigation, the spice variety, quantity and cooking methods, and recipes. All foods consumed were divided into 13 classes:grains and their products, beans(including nuts) and their products, potato and its products, meat and its products, eggs and their products, aquatic products, milk and dairy products, vegetables, fruits and their products, sugar and sugar products, beverage and water, alcohol and seaweeds. Food samples were collected and iodine contents of different types of food were measured, and daily food consumption of the reference man(adult male) in the four areas was calculated. Then the male adult dietary iodine intake in the four areas and Fujian Province was estimated. Results A total of 69 families(accounting for 19.2% of the 359 families surveyed) ate seaweed foods during the three days survey period. The average salt intakes per reference man were 4.5, 5.8, 7.5, 12.3 g, respectively, in coastal cities, inland cities, coastal rural and inland rural. The adult male dietary iodine intake in Fujian Province was 343.8μg/d, and the values were 234.4, 347.1, 328.4, 465.3μg/d, respectively, in coastal cities, coastal rural, inland cities and inland rural. If people did not eat seaweed foods, the results would be 239.7, 137.5, 253.6, 200.3, 367.4μg/d. The main sources of dietary iodine intake were vegetables (33.2%), seaweeds(30.3%), meat(13.4%) and aquatic products(13.0%). If people did not eat seaweed foods, the results would be vegetables(47.6%), meat(19.1%) and aquatic products(18.7%), and iodine contribution rate of the 3 types of food was 85.4%. Conclusions Under the conditions of eating iodized salt, male adult dietary iodine intake is appropriate in different areas of Fujian Province. There is no such problem as iodine excessive. Iodized salt is the main source of dietary iodine. Residents in coastal city, if not eating seaweed foods, will be at risk of iodine deficiency, even if they eat iodized salt.
7.Study on the assessment of individual iodine nutritional status based on two prediction equations
Zhuan LIU ; Xiaoyan WU ; Jiani WU ; Muhua WANG ; Meng HE ; Zhihui CHEN
Chinese Journal of Endemiology 2021;40(4):337-341
Objective:The iodine excretion of adult individuals was calculated by two creatinine correction methods of urinary iodine, and the significance and value of the methods to measure individual iodine nutrition levels were assessed to provide a reference basis for further epidemiological investigation and study of iodine deficiency disorders.Methods:Healthy adults aged 18 - 59 years from Fujian Province were recruited and their 24 h urine, fasting urine, and morning spot urine (8:00 - 12:30) were collected and the corresponding urinary iodine and creatinine concentrations were measured. The estimated 24 h urinary iodine excretion was calculated using two different creatinine correction and creatinine estimation formulas were compared with the measured 24 h urinary iodine excretion.Results:There were no significant differences in measured 24 h urinary iodine excretion value, estimated 24 h urinary iodine excretion value 1 of fasting urine and morning spot urine, and estimated 24 h urinary iodine excretion 2 of fasting urine and morning spot urine between genders (μg/d: 195.5 vs 190.9, 190.0 vs 181.7, 160.2 vs 144.2, 174.8 vs 179.2, 148.3 vs 131.5); there were no significant differences in measured 24 h urinary iodine excretion and fasting urinary estimated 24 h urinary iodine excretion 1, estimated 24 h urinary iodine excretion 2 ( P > 0.05), and there were significant differences in measured 24 h urinary iodine excretion and morning spot urinary estimated 24 h urinary iodine excretion 1, estimated 24 h urinary iodine excretion 2 ( P < 0.01). And there were significant linear correlations between measured 24 h urinary iodine excretion and estimated 24 h urinary iodine excretion 1 of fasting urine and morning spot urine, estimated 24 h urinary iodine excretion 2 of fasting urine and morning spot urine ( r = 0.772, 0.266, 0.828, 0.391, P < 0.01). Conclusions:It is feasible to estimate 24 h urinary iodine excretion in adults with creatinine-corrected fasting urinary iodine concentration. Creatinine-corrected fasting urinary iodine concentration can be used as an individual iodine nutrition level evaluation index, but whether it is applicable to children and pregnant women remains to be further studied.
8.Simultaneous Determination of Chromium Ⅲ, Chromium Ⅵin Leather and Cloth by Ion Chromatography with On-line Sample Pretreatment Column-Switching Technique
Jie HE ; Jiasheng YU ; Zhongping HUANG ; Zuoyi ZHU ; Muhua WANG ; Nani WANG ; Jiajie ZHANG ; Peimin ZHANG ; Gang LI ; Yan ZHU
Chinese Journal of Analytical Chemistry 2014;(8):1190-1195
A new analytical method has been developed for the simultaneous determination of CrⅢand CrⅥusing on-line sample pretreatment valve-switching ion chromatography. The organic matrix in leather was removed by using a reverse-phase column as the pretreatment column. Before injection, EDTA was added into sample solution to react with the CrⅢto form anion which could absorb visible light strongly. After injection, the ions separated by the pretreatment column were received in a collection loop. Then the ions were delivered into an analytical column and separated. CrⅥ then was derived with the derivatization reagent 1, 5-diphenylcarbazide ( DPC) , and detected together with CrⅢ-EDTA complex by a UV-Vis detector. Under the optimum conditions, the linear range of the method for CrⅢ and CrⅥ was 0. 3-10 mg/L (r=0. 9991) and 0. 05-2 mg/L ( r = 0. 9992 ), whereas detection limits ( S/N = 3 ) were 80. 78 μg/L and 6. 67 μg/L, respectively. The recoveries were in the range of 88. 7%-108. 5% with the relative standard deviations for retention time and peak area less than 3%. The method could be applied to determine CrⅢ and CrⅥ in leather and cloth effectively and quickly.
9.Medication Analysis and Pharmaceutical Care for One Patient with Advanced Breast Cancer
China Pharmacist 2017;20(10):1820-1822
Objective:To provide reference for clinical pharmacists participating in the therapy and pharmaceutical care for ad-vanced breast cancer. Methods:By participating in the drug therapy for a case of advanced breast cancer with bone metastases pain, clinical pharmacists provided the medication analysis and the real-time pharmaceutical care according to the disease conditions during the treatment process. Results:Clinical pharmacists made full use of pharmacological knowledge to analyze and offer proposals on re-lieving pain, chemotherapy and bisphosphonates therapy,which guaranteed the safety of drug use. Conclusion: Medication analysis and pharmaceutical care performed by clinical pharmacists can ensure the safety and effectiveness of drug use for the patients with drug treatment.
10.Medication Analysis and Pharmaceutical Care for One Patient with Advanced Breast Cancer
China Pharmacist 2017;20(10):1820-1822
Objective:To provide reference for clinical pharmacists participating in the therapy and pharmaceutical care for ad-vanced breast cancer. Methods:By participating in the drug therapy for a case of advanced breast cancer with bone metastases pain, clinical pharmacists provided the medication analysis and the real-time pharmaceutical care according to the disease conditions during the treatment process. Results:Clinical pharmacists made full use of pharmacological knowledge to analyze and offer proposals on re-lieving pain, chemotherapy and bisphosphonates therapy,which guaranteed the safety of drug use. Conclusion: Medication analysis and pharmaceutical care performed by clinical pharmacists can ensure the safety and effectiveness of drug use for the patients with drug treatment.