1. HPLC-MS in simultaneous determination of 4 compounds in Fuzhengpingxiao capsule: Gentiopicroside, liquiritin, rosmarinic acid and harpagoside
Academic Journal of Second Military Medical University 2011;32(5):524-527
Objective: To establish a HPLC-MS method to simultaneously determine the contents of gentiopicroside, liquiritin, rosmarinic acid and harpagoside in Fuzhengpingxiao capsule. Methods The chromatographic separation was performed on a Agilent Eclipse plus C18 column (250 mm × 4.6 mm, 5 μm) with a mobile phase of acetonitrile (A)-0.1% methanoic acid (B) (0-30 min, 15% A-40% A), eluted at a flow rate of 1.0 ml/min and with a split ratio of 3: 1. Negative ionization and selected ion monitoring (SIM) mode on Mass were selected. Results The limit of quantitation (LOQ) values of gentiopicroside, liquiritin, rosmarinic acid and harpagoside were 5.73, 6.37, 6.50, and 6.46 ng/ml, and the limit of detection (LOD) values were 0.46, 0.32, 0. 33 and 0.32 ng/ml, respectively. Good linearity (r > 0.999 0) was obtained over the investigated concentration ranges. Reproducibility was evaluated by intra- and inter-day assays, and RSD values were below 2%. The average recoveries of the 4 compounds were within the range of 98%-102%. Conclusion We have established a rapid and efficient HPLC-MS method for determination of 4 constituents in Fuzheng pingxiao capsule: gentiopicroside, liquiritin, rosmarinic acid and harpagoside.
2. Determination of five components in Fuzheng Pingxiao Capsula by HPLC-MS
Chinese Traditional and Herbal Drugs 2011;42(9):1736-1739
Objective: To simultaneously determine the contents of five components (amygdalin, paeoniflorin, peimine, astragaloside IV and rutaecarpine) in Fuzheng Pingxiao Capsula by LC-MS. Methods: Chromatographic separation was achieved with gradient elution by Agilent Eclipse plus C18 column (250 mm x 4.6 mm, 5 μm) and an Agilent 1100 Mass Spectrometer system was operated under the SIM mode with electrospray positive ionization (ESI). The mobile phase is acetonitrile-0.1% methanoic acid. Results: The LOQ of amygdalin, paeoniflorin, peimine, astragaloside IV, and rutaecarpine in Fuzheng Pingxiao Capsula were 12.9, 32.2, 1.00, 1.21, and 0.40 ng/mL, and the LOD were 6.46, 6.44, 0.25, 0.61, and 0.16 ng/mL, respectively. Within the linear range, r > 0.999 0. Both intra-day and inter-day precision with RSD was less than 2%. The average recovery rates of the five components were in the range of 98%-102%. Conclusion: This method is fast, sensitive, and reproducible. It could be used to determine amygdalin, paeoniflorin, peimine, astragaloside IV, and rutaecarpine in Fuzheng Pingxiao Capsula under the same chromatogram condition.
3.Existing problems and preliminary investigation on the clinical teaching of first-aid medicine
Qiang XIANG ; Liang WEN ; Minghua LIU ; Zhaoxia DENG ; Jun TIAN
Chinese Journal of Medical Education Research 2011;10(4):464-465
This article analyzes and summaries the problems and difficulties existing in the first-aid medicine's clinical teaching.Combined with his own teaching experience,the author has made some exploration on the teaching time,the way of teaching and inspection form,which has got a good teaching effect.It provids the reference and development for the clinical teaching of first-aid medicine.
4.Early changes of angiopoietin-2 in multiple trauma patients and its clinical significance
Minghua LIU ; Jun TIAN ; Xiangyu CHEN ; Liang WEN ; Yongping SU
Chinese Journal of Trauma 2010;26(4):328-331
Objective To investigate early changes of angiopoietin-2(Ang-2)in multiple trauma patients and assess its clinical significance.Methods Forty-five multiple trauma patients aged 2060 years admitted to the hospital within one hour after injury were randomly divided into three groups according to injury severity score(ISS).Blood specimens were obtained immediately upon arrival in the emergency department and plasma samples were assayed for comparing changes of Ang-2,TNF-a and IL-6.Meanwhile,plasma level of Ang-2 was measured and analyzed under different oxygenation index,shock index and base deficit.Results Plasma level of Ang-2 was positively correlated with ISS(P < 0.01)and was concordant with the plasma levels of TNF-a and IL-6(P<0.01).Furthermore,plasma level of Ang-2 was elevated upon increase of shock index or decrease of oxygenation index(P < 0.01).Plasma level of Ang-2 was elevated with the increase of base deficit(P < 0.01).Conclusions High level of Ang-2 is a marker of endothelial activation and dysfunction early after trauma.Ang-2 is related tightly with the injury severity,inflammation factors,systemic oxygenation and tissue hypoperfusion and may have a tight relation with pathophysiological development and clinical outcome after trauma.
5.Congenital symbrachydactyly: outcomes of surgical treatment in 120 webs.
Wen-jun LI ; Jun-hui ZHAO ; Wen TIAN ; Guang-lei TIAN
Chinese Medical Journal 2013;126(15):2871-2875
BACKGROUNDSymbrachydactyly is defined as a combination of short fingers with syndactyly. There are few published reports estimating the incidence of symbrachydactyly. The aim of this study was to investigate the clinical features and the outcome of surgical treatment for congenital symbrachydactyly.
METHODSOne hundred and twenty webs of thirty-four patients of symbrachydactyly were involved in the study. The sex ratio was 21 males/13 females. The age ranged from 1 year to 8 years, average 2.6 years. Four cases had both hands involved and 30 patients had one hand involvement. Release of the syndactylous digits webs were completed by one surgical procedure in 14 cases and more than one surgical procedure in 20 cases; 3 to 6 months between the procedures. In the meantime, some of the associated hand deformities were treated.
RESULTSPostoperative follow-up time was 10 to 18 months, average 12 months. All the fingers involved in this study were separated successfully. However, 6 fingers had scar tissue contracture and 8 had web scar adhesion. All complications needed further surgical treatment. Parents of 94.1% of the patients were satisfied with the overall function of the hand, and 76.5% were satisfied with the cosmetic appearance of hand.
CONCLUSIONSThe combination of syndactyly and brachydactyly is the main clinical feature in symbrachydactyly. Separation of the digital webs can greatly improve the function of the hand. However, more work needs to be done to improve the cosmetic appearance of the hand.
Abnormalities, Multiple ; Brachydactyly ; surgery ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Male ; Syndactyly ; surgery ; Treatment Outcome
6.Colour stabilities of three types of orthodontic clear aligners exposed to staining agents
Liu CHEN-LU ; Sun WEN-TIAN ; Liao WEN ; Lu WEN-XIN ; Li QI-WEN ; Jeong YUNHO ; Liu JUN ; Zhao ZHI-HE
International Journal of Oral Science 2016;8(4):246-253
The aim of this study was to evaluate and compare the colour stabilities of three types of orthodontic clear aligners exposed to staining agents in vitro. Sixty clear orthodontic aligners produced by three manufacturers (Invisalign, Angelalign, and Smartee) were immersed in three staining solutions (coffee, black tea, and red wine) and one control solution (distilled water). After 12-h and 7-day immersions, the aligners were washed in an ultrasonic cleaner and measured with a colourimeter. The colour changes (ΔE*) were calculated on the basis of the Commission Internationale de I’Eclairage L*a*b*colour system (CIE L*a*b*), and the results were then converted into National Bureau of Standards (NBS) units. Fourier transformation infrared (FT-IR) spectroscopy and scanning electron microscopy (SEM) were conducted to observe the molecular and morphologic alterations to the aligner surfaces, respectively. The three types of aligners exhibited slight colour changes after 12 h of staining, with the exception of the Invisalign aligners stained with coffee. The Invisalign aligners exhibited significantly higherΔE*values (ranging from 0.30 to 27.81) than those of the Angelalign and Smartee aligners (ΔE*values ranging from 0.33 to 1.89 and 0.32 to 1.61, respectively, Po0.05). FT-IR analysis confirmed that the polymer-based structure of aligners did not exhibit significant chemical differences before and after the immersions. The SEM results revealed different surface alterations to the three types of aligner materials after the 7-day staining. The three types of aesthetic orthodontic appliances exhibited colour stability after the 12-h immersion, with the exception of the Invisalign aligners stained by coffee. The Invisalign aligners were more prone than the Angelalign and Smartee aligners to pigmentation. Aligner materials may be improved by considering aesthetic colour stability properties.
7.Relationship between external appearance of laryngeal carcinoma and submucosal infiltrating extent
Binquan WANG ; Shuxin WEN ; Hui HUANGFU ; Haili ZHANG ; Chunming ZHANG ; Jun TIAN
Chinese Archives of Otolaryngology-Head and Neck Surgery 2006;0(07):-
OBJECTIVE To observe the submucosal infiltrating extent of laryngeal carcinoma tissue by different location,different T staging and external appearance and to analyze the impact of laryngeal carcinoma submucosal infiltrating extent on surgical margin.METHODS Forty-three laryngeal en bloc specimens coming from 43 cases with laryngeal carcinoma were vertically cut-down along tumor long axis,and were slivered into sections by which laryngeal carcinoma submucosal infiltrating distance was measured under microscope.Laryngeal carcinoma latent submucosal infiltrating extent was compared among different location,different T staging and external appearance.RESULTS Basing on tumor external appearance and infiltrating extent,laryngeal carcinoma was classified into three types:exogenic type,ulcerating infiltrating type and mixed infiltrating type.Of 43 specimens,the three types were 10,8 and 25 cases respectively.There was a significant difference in submucosal infiltrating extent between T1~T2 and T3~T4 laryngeal carcinoma.There was also significant difference in submucosal infiltrating extent between exogenic type and ulcerating infiltrating type or mixed infiltrating type.CONCLUSION The submucosal infiltrating extent of laryngeal carcinoma tissue plays an important role in the surgical margin. As laryngeal carcinoma T stage developing,tumor submucosal infiltrating extent is becoming more extensive.Laryngeal carcinoma submucosal infiltrating extents in ulcerating infiltrating and mixed infiltrating type are more extensive than that in exogenic type.The partial laryngectomy should be prudent to be performed in cases with local advanced ulcerating infiltrating and mixed infiltrating laryngeal carcinoma.
8.Breast fibroadenoma:comparative study of pathological features with varied MRI findings
Xiao-Hong WANG ; Wei-Jun PENG ; Wen-Tao YANG ; Ya-Jia GU ; Tian-Xi YANG ;
Chinese Journal of Radiology 2001;0(05):-
Objective To identify histopathologic correlates for the various MRI appearances of breast fibroadenomas.Methods Thirty-eight fibroadenomas in 33 patients(aged 24—57 years)examined with gadolonium-enhanced MR imaging were observed for signal intensity on T_2-weighted images,contrast enhancement,shape,and internal septation,and these findings were correlated with histopathologic findings.All cases underwent surgery and were proved by pathology.Results(1)The lesion shape was lobular,or round in 34 of 38 fibroadenomas(89.5%).(2)The signal intensity on T_1-weighted images was less than or equal to that of fibroglandular tissue in all cases.The signal intensity on T_2-weighted images was highly varible:high T_2 signal intensity was associated with more myxomatous stromal(mean myxoid-sclerotic index value of 1.9),higher stromal cellularity(mean stromal cellularity index value of 2.2); Fibroadenomas with low T_2 signal intensity had stromal that was nearly uniformly sclerotic(mean myxoid- sclerotic index values of 2.8)and low stromal cellularity(mean stromal-cellularity index value of 1.2). Significant differences were found between these two groups,x~2=11.267 and x~2=10.415(P0.05).The degree of contrast enhancement was proved to be related to ages of patients.The enhancement was more intensely in younger patients.(5)Internal septations were identified within nine of 33 enhancing fibroadenomas (27.3%)and appeared to correlated with collagenous bands at histopatholigic analysis.Conclusions Fibroadenomas demonstrate marked histopathologic variability.The resultant variability in the MR appearance correlated with the degree of myxomatous or sclerotic and stromal cellularity.Lobulation and internal septation,which appear to reflect intrinsic growth patterns of fibroadenomas,may provide more reliable information for distinction.Familiarity with the diagnostic features would facilitate to make the differential diagnosis correctly.
9.Survey of quality of life in 117 living donor kidney transplant patients: multivariate analysis in single center
Lei ZHANG ; Yichen ZHU ; Jun LIN ; Zelin XIE ; Wen SUN ; Ye TIAN
International Journal of Surgery 2016;43(5):332-335
Objective To evaluate the postoperative quality of life of donors in living donor renal transplantation patients.Methods One hundred and seventeen donors were involved in present study from 2006-2008.A crosssectional survey was performed with questionnaire research to all the donors who received living donor nephrectomy during this period.The questionnaire included sociodemographic characteristics,surgical complications,economic status,donors awareness status,family support,the health care,social welfare and daily exercise after surgery.The Chinese version of SF-36 was used as the measurement of quality of life.The statistic analyze include T test,analysis of variance and stepwise regression analysis.Results The donors' mental health status was better than the healthy population (P < 0.05).The difference of quality of life and scores of other dimensions compared with the healthy population was not statistically significant (P > 0.05).In univariate analysis,four kinds of fields such as age,education level,economic status and physical exercise were associated with quality of life.In further multivariate analysis,with exclusion of the interaction between various factors,the main factors for postoperative quality of life are the cultural,economic status and physical activity (P < 0.05).Conclusions Social and psychological factor should be concerned in donor's preoperative screening.Good social psychological background,the necessary psychological intervention and postoperative follow-up maybe play an important role to improve the postoperative quality of life in living donor renal transplantation.
10.Expression and clinical significance of NY-ESO-1 protein in human laryngeal squamous carcinoma
Jun TIAN ; Binquan WANG ; Jianmin LI ; Fuhui HUANG ; Shuxin WEN ; Yanting ZHANG
Cancer Research and Clinic 2010;22(4):239-242
Objective To detect the expression of Cancer-Testis antigen NY-ESO-1 in human laryngeal squamous carcinoma (LSC) and to explore its significance in immunotherapeutic application. Methods The expressions of NY-ESO-1 protein in the LSC and in the pathologically positive lymph nodes were detected by PV-9000 Immunohistochemistry. Western blotting was also employed to measure the expressions of NY-ESO-1 in the tumor core region(TC), the tissues at the sites of 0.5cm, 1.0cm away from LSC periphery and the distant normal larynx tissues. Results NY-ESO-1 protein expression was positive in 30 out of 69 (43.48 %) cases of LSC. The expression level of NY-ESO-1 protein were found to significantly decrease by tums in TC and corresponding adjacent tissues (P <0.01). None of the nine normal larynx tissues expressed NY-ESO-1 protein.It did not display an obvious correlation between the expression of NY-ESO-1 with T staging, pathological grading and lymph node metastasis (P >0.05). Its positive expression was found in pathologically positive cervical lymph nodes, which were significantly lower than that in the primary site (P <0.05). Conclusion NY-ESO-1 protein express at high level in human laryngeal squamous carcinoma, and they may play a role in genesis and development of tumors, which suggests that NY-ESO-1 gene might be used as target antigens for immunotherapy of LSC and the further research is necessary.