Treatment of Bone and Joint Diseases with Gancao Fuzitang： A Review / 中国实验方剂学杂志

Gancao Fuzitang originates from the Treatise on Febrile Diseases and Miscellaneous Diseases （《伤寒杂病论》） and is mainly used to treat pain in the bones and joints and symptoms such as no flexion or extension. It has the effect of tonifying the spleen and kidney and removing dampness and turbidity， so it is widely used in the clinical treatment of various bone and joint diseases. This article reviewed the clinical research and mechanism of Gancao Fuzitang in the treatment of bone and joint diseases. The research has found that this prescription has good efficacy in treating bone and joint diseases such as rheumatoid arthritis， rheumatoid arthritis， ankylosing spondylitis， gout， and intervertebral disc herniation. Its mechanism of action may be related to regulating the level of inflammatory factors， antioxidation， and the protein expression of inflammatory and apoptotic cell-related pathways， improving bone and joint diseases， and alleviating related symptoms. This study can provide a reference for further deepening the research on the prevention and treatment of bone and joint diseases with Gancao Fuzitang.

Effects of pranlinide on cognitive behavior, β amyloid protein 6E10, inflammatory factors and neuronal cell morphology in brain and retina of 5×FAD mice and WT mice / 解剖学报

[Abstract] Objective To study the effects of pranlinide on cognitive behavior, β amyloid(Aβ) protein 6E10, inflammatory factors and neuronal cell morphology in brain and retina of 5×FAD mice and WT mice. Methods Thirty two 5×FAD mice and 16 WT mice were selected. All were female. 5×FAD mice were randomly divided into blank group and treatment group; No treatment was given in WT group. Blank group was intraperitoneally injected with PBS; treatment group was received intraperitoneal injection of pranlinide once a day for 8 weeks. The changes of cognitive ability were measured by Morris water maze test. The expression of Aβ6E10 protein in mice hippocampal cells and retina was detected by immunohistochemistry. Tumor necrosis factor α(NF-α) was determined by enzyme-linked immunosorbent assay. The same method was also used for interleukin-1β(IL-1β) detection (The content of inflammatory factors). The arrangement and morphology of nerve cells in mouse hippocampal tissue were determined by hematoxylin-eosin (HE) staining. Results The latency time of treatment group was shorter than that of 5×FAD group,and the times of crossing the platform and the percentage of target quadrant stay in the treatment group were higher than those in the 5×FAD group, and the differences were statistically significant (P0. 05). Compared with the 5×FAD group, the nerve cells in the treatment group were arramged in order and clear relatively. The distribution of glial cells was concentrated; The surrounding clearance was small. Conclusion Pranlinide can improve the cognitive ability of mice. The arrangement of nerve cells is regular, the shape is regular and the boundary is clear; The distribution of glial cells is concentrated; surrounding of clearance decrease. Aβ6E10 is synchronized in brain and retina.

Delayed interval delivery after cervical cerclage in twin pregnancies: report of four cases / 中华围产医学杂志

We report the management and maternal and neonatal outcomes of four cases of delayed interval delivery after cervical cerclage in twin pregnancies, who hospitalized in Shanghai First Maternity and Infant Hospital from year 2017 to 2018. Four patients with dichorionic diamniotic twin pregnancies all presented with gradually weakened uterine contractions after spontaneous vaginal delivery of twin 1. After informed consent, the patients received cervical cerclage at 2 to 3 days after delivery when the maternal and fetal conditions were stable, to delay delivery of twin 2. The gestational weeks at delivery of twin 1 were 25 +4, 23 +1, 27 +1, and 23 weeks, which were noted for 30 +1, 32 +6, 31 +4, and 24 weeks for twin 2, respectively. Delayed delivery intervals were 32, 69, 31 and 7 d. Three of the four twin 2 survived, with Apgar score ≥ 8 at 1 minute and birth weight of 1 390, 2 290 and 1 620 g. During a 2-year follow-up, no developmental abnormalities were observed in the children, and no serious maternal complications were found, including severe infection, bleeding or cervical laceration.

Risk management of postpartum hemorrhage / 中国实用妇科与产科杂志

Postpartum hemorrhage,a frequent emergency in obstetrics,is the first reason for maternal mortality in China and worldwide.The contributors to adverse outcome included delayed treatment because of underestimation of blood loss,lack of blood products,lack of treatment algorithms,lack of knowledge and training,insufficient interdisciplinary communication and inadequate management.Therefore,it is essential to improve the management of medical institutions and set up a protocol for emergency situations.Meanwhile,the key point in rescue postpartum hemorrhage is the teamwork with efficient training and cooperation.This article made a review on the management of postparttum hemorrhage,establishment of emergengy protocol and risk assessment and team cooperation based on guidelines and recommendations published by main authorities and the latest studies.The goal of the article is to provide some ideas to reduce the frequency of severe hemorrhages after delivery and improve maternal outcomes.

Assessment of fetal reserve in the perinatal period / 中国实用妇科与产科杂志

It is crucial to assess the fetal reserve function and intrauterine health status before and during labor,based on antenatal high risk factors and fetal surveillance methods such as intrapartum electronic fetal monitoring and fetal scalp stimulation,which can guide clinicians to intervene in a timely and effective manner,thus avoiding adverse outcomes due to fetal hypoxia.

Clinicopathological Analysis of Children's Systemic EBV-Positive T-Cell Lymphoma / 中国实验血液学杂志

OBJECTIVE@#To explore the clinical and pathologic features as well as prognosis of systemic EBV-positive T-cell lymphoma in children.@*METHODS@#The clinical data including clinical manifestation, pathologic changes and treatment in 16 patients with children's systemic EBV-positive T-cell lymphoma were analyzed retrospectively, and follow-up of patients were carried out.@*RESULTS@#The 16 cases included 12 males and 4  females with median age of 3.3 years old. It was demonstrated that the clinical and pathological features of the children's systemic EBV-positive T-cell lymphoma were as followed fever, hepatosplenomegaly, cytopenia, lymphadenopathy, and hemophagocytosis in bone marrow or organ. Histologically, the structures of lymph node was normal, partially or completely destoryed. The paracortical zone was expanded with prominent infiltration of small to medium-sized atypical lymphocytes. The major immunophenotypic characteristics were as follows: (1) Almost all biopsies exhibited prominent T cell proliferation. (2) CD3 was expressed in 16 patients (100%, 16/16), CD4 in 5 patients (31.3%, 5/16)，CD5 in 13 patients (81.3%, 13/16)，CD7 was expressed in 11 patients (68.8%, 11/16)，CD8 in 15 patients (93.8%, 15/16)，CD4 and CD8 were expressed in 5 patients (31.3%, 5/16)，CD4 and CD8 double-negative in patients (6.3%, 1/16)，16 patients were CD56 negative (100%, 16/16). (3) TCR gene cloning rearrangement in 16 patients (93.8%, 15/16). (4) EBV-EBER was expressed in 16 patients (100%, 16/16). 11 out of 16 cases died, 1 cese failed to be followed up, 1 case relapsed，and 3 cases survived, reseptively. The media survival time was 4 months.@*CONCLUSION@#Systemic EBV-positive T-cell lymphoma predominantly occurred in childhood and early teen-age, and lacks specific clinic features, usually combined with hemophagocytic syndrome. The confirmed diagnosis requires comprehensive analysis of clinical manifestation, pathomorphology, immunohistochemical detection, EBV-EBER insite hybridization, and TCR gene test. The overall prognosis of the disease is poor and the fatality rate is high.

ReaI-time positioning of the abIation catheter uItrasonic probe in the heart:a simuIation experiment / 中国组织工程研究

BACKGROUND: Three-dimensional magnetic field positioning and three-dimensional electric field positioning are two main technologies used in heart ablation, but their required equipments are very expensive. OBJECTIVE: To develop a new method of ablation catheter positioning by combining ultrasonic probe with ablation catheter. METHODS: Three-dimensional data of human heart were obtained from the anatomical data set of the body, and then a three-dimensional vector model of the endocardial surface was established. The basic parameters and scanning strategy of ultrasonic probe were designed and calculated, to compile a corresponding simulation software. Based on the three-dimensional endocardial vector model, the detection data of the ultrasonic probe were obtained by simulation calculation and processed. Then, the target surface characteristics were reconstructed, matching with the surface features of the proposed vector model. The position of the probe was finally determined. RESULTS AND CONCLUSION: The three-dimensional model of the endocardium was established based on the anatomical data set, and the ultrasonic surface detection data were obtained by the simulated ultrasonic irradiation. The reconstructed surface model with high accuracy exhibited a desired match with the target area in the three-dimensional model of endocardium. The error of the probe position and its theoretical position fulfilled the requirement of positioning accuracy. In conclusion, the use of ultrasonic imaging technology can accurately position the catheter probe in the heart during heart ablation, providing an accurate and reliable navigation for the implementation of heart ablation.

March of the partogram / 中华围产医学杂志

In 1930s, Wolf created the first partogram. In 1950s, Friedman proposed the classical model of partogram that has been applied in clinical labor assessment ever since. Over the past ten years, Zhang has made great improvement in this field. Here, we reviewed the three different stages in partogram research (the first proposed stage, Friedman's classical stage and Zhang's stage) in terms of its background, demographic characteristics and clinical application. Moreover, this article also emphasized the necessity of partogram research and discussed the prospects for future research and clinical application based on the recent progress in China.

Effect of Pirin on the proliferation and self-renew of glioma stem cell / 国际药学研究杂志

Objective To study the effect of Pirin(an iron-binding nuclear protein)on the proliferation and self-renewal of glioma stem cell(GSC)so as to provide a potential therapy target for malignant glioma.Methods PLKO.1-shPirin lentiviral plasmids were constructed to stably knock down Pirin in GSC by using lentivirus infection system.The interference efficiency of Pirin short hair?pin RNA(shRNA)was detected by Western blotting. The capacity of GSC was examined by the assessment of cell viability. Tumor sphere formation assay was used to detect the effect of Pirin on GSC self-renewal capacity. Results Pirin was highly expressed in GSC.Consistently,the protein level of Pirin in the conditioned medium from GSC was much higher than that from the corresponding non-stem tumor cell(NSTC).Gene-sequencing analysis demonstrated that PLKO.1-shPirin lentiviral plasmids were successfully con?structed.Pirin shRNA transfection significantly inhibited the expression of Pirin in GSC and suppressed the cell viability and ability of tumorsphere formation.Conclusion Knocking down Pirin significantly inhibites the cell proliferation and self-renewal of GSC.

Related factors of cesarean section and predictive validity based on Robson Ten-Group Classification System / 中华围产医学杂志

Objective To explore the relationship between the obstetric factors defined by Robson Ten-Group Classification System (RTGCS) and cesarean section rate (CSR),and to evaluate the validity of predictive models established based on the RTGCS for cesarean section.Methods Clinical data of 41 295 cases delivered in Shanghai First Maternity and Infant Hospital from January 1,2012 to September 30,2014 were retrospectively collected.CSR of different groups categorized by the RTGCS was analyzed by descriptive epidemiological methods by three models.Model 1 was obstetrics factors (parity,history of cesarean section,number of fetus,mode of labor,fetal presentation and gestational age);model 2 was obstetrics factors (model 1) + demographic characteristics and severity (maternal age and with/without treatment in intensive care unit);model 3 was defined as model 2+ complications (placenta previa,placental abruption,chronic or gestational hypertension,preeclampsia,renal disease,or human immunodeficiency virus infection).The relationship between obstetrics factors classified by the RTGCS and CSR was analyzed by the logistic regression model (the potential confounders were controlled).The validity of predictive models was evaluated by analyzing the area under the receiver operative characteristic (ROC) curve.Results (1) There were statistical differences in total CSR and CSR before labor among those cases respectively grouped by age,medical insurance,parity,signal/multiple pregnancy,fetal presentation and gestational age (all P＜0.05).(2) The recruited cases were categorized into ten groups according to the RTGCS and among them,the second group (single,cephalic presentation,nulliparous,≥ 37 gestational weeks,induced labor or cesarean section before labor) accounted for most of the cesarean section cases (61.2％,11 217/18 322),followed by the fourth group (single,cephalic presentation,multiparous,no previous cesarean section,≥ 37 gestational weeks,induced labor or cesarean section before labor),which were 11.2％ (2 061/18 322).(3) Obstetrical parameters,including parity,number of fetus,mode of delivery,history of cesarean section,fetal presentation and gestational weeks at delivery were related to CSR,even after adjustment for maternal age and medical insurance,or obstetrical complications,or both above factors (all P＜0.05).(4) Areas under the ROC curves and the 95％ confidence intervals of model 1,2 and 3 were 0.867 (0.863-0.870),0.875 (0.872-0.878) and 0.881 (0.878-0.885),respectively (all P＜0.01).Conclusion Related variables of RTGCS highly correlate with CSR and could be used as promising indicators for prediction of cesarean section.The RTGCS is of great application value to those research subjects.

Perinatal outcomes following selective feticide by radiofrequency ablation in complex monochorionic ;pregnancies / 中华围产医学杂志

To assess the perinatal outcomes following selective feticide through radiofrequency ablation (RFA) in complex monochorionic pregnancies. Methods In this retrospective observational study, 34 cases of complex monochorionic pregnancies treated with RFA for selective feticide and delivered at the Shanghai First Maternity and Infant Hospital between January 1, 2012 and December 31, 2013, were included. Gestational age at RFA, the number of RFA cycles, maternal and fetal complications, gestational age at delivery, neonatal outcomes at 28 days after birth and neonatal development after birth were recorded. Fetal survival rate were defined as the number of survivors at 28 days after birth divided by the number of remaining fetuses after RFA. Factors affecting fetal survival rate were also analyzed. Statistical analysis was performed using Fisher's exact test. Results (1) The process for RFA:The gestatinal age for the procedure was (20.7±3.1) weeks(16+1-27+6 weeks). The successful rate of procedures was 100%(34/34) and the cycle number for RFA was 1-6 times. (2)Fetal complications and survival rate of remaining fetuses after RFA:there were six pregnant women suffering from premature rupture of membrane (PROM) before 28 weeks. Among those women, one had miscarriaged at 25 weeks, one chose to terminate at 26 weeks and the remaining four chose to continue the pregnancy. There were three remaining fetuses developing fetal severe anemia with hydrops after RFA. Two of them had fetal demises 2 days after the procedures and one chose to have termination. Another two cases with discordant fetal anomalies had fetal demises with unknown reasons one day after RFA. There were 27 remaining fetuses after RFA who survived until 28 days after birth. The mean gestational age at delivery was(36.4±4.1)weeks (26+4-40 weeks) and the mean birth weight was (2 913± 978) g (1 080-4 600 g). The overall fetal survival rate 28 days after birth was 79%(27/34). There were no abnormal findings in antenatal magnetic resonance imaging (MRI) four weeks after the procedure and no abnormal development of nervous system in the surviving neonates between 3 months old and 1.5 years old. (3) Factors affecting fetal survival rate :There were no significant differences identified in the rate of fetal severe anemia and fetal demise (2/15, 2/13 and 1/6), the rate of PROM before 28 weeks (1/15, 4/13 and 1/6) and survival rate of 28 days after birth (13/15, 10/13 and 4/6)among three groups with different gestational age (16+1-, 20- and 24-27+6 weeks) for RFA(all P>0.05). The indications for RFA included severe selective intrauterine growth restriction (50%, 17/34), discordant for fetal abnormalities(24%, 8/34) , twin reversed arterial perfusion sequence(18%, 6/34)and dichorionic or monochorionic triamniotic pregnancy (9%, 3/34). There were also no significant differences noted in the rate of fetal complications and fetal demise(3/17, 2/8, 0/6, 0/3), the rate of PROM before 28 weeks (3/17, 0/8, 2/6, 1/3)and survival rate of 28 days after birth among different groups (12/17, 6/8, 6/6, 3/3) with different indications for RFA(all P>0.05) . No significant differences observed in the rate of fetal complications and fetal demise(10% and 2/5)and the rate of PROM before 28 weeks (17%and 2/5)between two groups with different cycle numbers for RFA (<3 times and≥3 times, all P<0.05), while the group with cycle number ≥ 3 times had lower survival rate 28 days after birth than the group with cycle number<3 times for RFA (2/5 vs 86%, P<0.05). Conclusions RFA is one of effective and safe procedures for selective feticide in complex monochorionic pregnancies.

Clinical study on dinoprostone suppositories 0.8 mm used in cervical ripening and labor induction of women with term pregnancy of premature rupture of the membranes:a multicenter study / 中华妇产科杂志

Objective To investigate safety and efficacy of dinoprostone suppositories(0.8 mm) used in cervical ripening and labor induction in women with term premature rupture of the membranes.Methods One hundred women of term monocyesis with premature rupture of the membranes,head presentation,bishop score less than 6(test group)and 180 women with intact fetal membranes(control group)were enrolled into this multicenter,prospective clinical study.The vaginal delivery system was inserted into the posterior foruix,and the patients were recumbent for 2 hours after insertion.The interval time from using dinoprostone suppositories to uterine contraction,to labor and delivery were recorded.The following index were also recorded and compared,including the mean inserted time of dinoprostone suppositories,fetal heart beat,meconium stained amniotic fluid,hyperstimulation of uterus and the other complications,mode of delivery,stage of labor,postpartum hemorrhage,status of neonates.Results Three cases intest group and 23 casesin control group weren't in labor within 24 hours.The rate of labor within 24 hours in test group was significant higher than that in control group(97.0% vs.87.2%,P<0.01).It was observed that 73 cases undergoing vaginal deliveries(75.3%,73/97)and 24 cases undergoing cesarean section dehveries(24.7%,24/97)in test group and 107 cases undergoing vaginal delivery(68.2%,107/157)and 50 cases undergoing cesarean section delivery(31.8%,50/157)in control group,when compared the rate of vaginal or cesarean section deliveries between two group,it didn't reach statistical difference (P >0. 05). It had no significant difference in the interval time from using dinoprostone suppositories to labor starting and the mean inserted time and the total labor time between two groups ( P > 0.05 ). The incidence of uterine tachysystole was 11.3% (11/97) in test group and 19. 1% (30/157) in control group (P>0. 05), which did not reach statistical difference (P>0. 05). There wasn't neonatal asphyxia in both groups. Conclusion It was safe and efficient to use dinoprostone suppositories for cervical ripening and induction of term pregnancy with premature rupture of the membranes, however, monitoring should be intensified.

Timing and prognosis of surgical operation for 32 patients with severe acute biliary pancreatitis / 中华胰腺病杂志

Objective To investigate the timing of surgical operation and prognosis of patients with severe biliary pancreatitis (SBP).Methods The patients were classified into three groups according to the interval between disease onset and operation time ( ＜7 d, 7 ～ 14 d, ＞ 14 d).The incidence of complications and mortality were compared among the 3 groups.Results A total of 32 patients of acute pancreatitis due to biliary tract diseases between 2006 and 2009 were included, and there were 15 males and 17 females with a median age of 51 years old.9 patients received operation within 7 days of disease onset and all of these patients were complicated with biliary obstruction;12 patients received operation between 7 ～ 14 days of disease onset and all of these patients were non-respondent to early non-operative management.11 patients received operation after 14 days.The complication rates in the three groups were 44.4% , 50.0% and 45.5%, respectively, the difference was not statistically significant ( P ＞ 0.05 ).The mortality rates in the three groups were 11.1%,16.7% and 18.2%, respectively, and the difference was not statistically significant ( P ＞ 0.05 ).Conclusions The management of SBP should be individualized.Patients with biliary obstruction, suppurative cholangitis or non-respondent to early non-operative management shall be managed surgically, and this is critical to decrease the mortality rates and improve prognosis.

Vaginal microflora and relevant factors in puerperium / 中华妇产科杂志

Objective To find out the bacterial species in the vagina of postpartum women and the possible influencing factors on colonization. Methods From Jun. 2007 to Oct. 2007, 560 postparmm women from 7 hospitals in China were enrolled. Questionnaire survey, gynecological examination and Nngent score of vaginal smear and microbial spectrum study of the vaginal flora were completed. Results (1 ) According to the Nngent score, 48 out of the 560 women were normal (8.6%), 337 at the borderline (60. 2% ) and 175 (31.2%) were complicated with bacterial vaginosis (BV). Among the 560 women, Bacterium lacticum were identified in 74 cases (13. 2% ), but not in the rest 486 cases (86. 8% ). Gardnerella and bacteroids were detected in 322 women (57. 5% ) and small flectobacillus in 214 women (38. 2% ) out of the 560 subjects. (2) Influencing factors on vaginal microflora: among the 266 women who had normal vaginal delivery, 23 (9. 4% ) showed normal vaginal microflora, 148 (55.6% ) at borderline and BV was diagnosed in 93 women (35.0%). The corresponding figures among the 294 women who underwent cesarean section were 23 (7. 8% ), 189 (64. 3% ) and 82(27.9% ), respectively. However, the incidence of BV had no statistical difference between these two groups (P = 0. 204). In the 233 women who received episiotomy, 22 (9. 4% ) showed normal vaginal microflora, 135 (57.9%) at borderline and 76 presented with BV (32. 6% ), the corresponding figures among the 327 women without episiotomy were 26 (8. 0% ), 202 (61.8%) and 99 (30. 2% ), respectively. The incidence of BV did not show any statistical difference between the above two groups (P = 0. 790 ). (3 ) Prenatal vaginitis were reported in 46 women, among which 5 (10.9%) with normal vaginal flora, 26 (56.5%) at borderline and 15 (32.6%) with BV, and again in the 514 women without prenatal vaginits, the above figures changed to 43 (8.4%) , 311 (60. 5% ) and 160 (31.1%). No significant difference was found in the incidence of BV between the two groups (P =0. 962). The rate of BV in women without sex, with sex occasionally and with sex frequently during pregnancy was 27.5% (78/284), 35.6% (96/270) and 1/6, respectively (P = O. 185), and the numbers in women who had breast-feeding, bottle feeding and mixed feeding were 31.0% (67/216), 39.3% (35/89) and 28.6% (73/255), respectively (P=0.573). Conclusions The amount of Lactobacillus in vagina of postpartum women is greatly reduced leading to dysbacteria. The incidence of BV is not affected by vaginal delivery, episiotomy, vaginitis, prenatal intercourse and the way of feeding, but is higher in postpartum women.

Recombinant human IgG antibodies against human cytomegalovirus / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>To study the passive immunization with human monoclonal antibodies as for prophylaxis of human cytomegalovirus (HCMV) infection.</p><p><b>METHODS</b>Fab monoclonal antibodies to HCMV were recovered by repertoire cloning of mRNA from a HCMV infected individual. Antigen binding specificity, CDR sequence of V(H) and V(L) and neutralizing activity on HCMV AD169 stain were analyzed in vitro. The light and heavy chain Fd fragment genes of Fab antibodies were further cloned into a recombinant baculovirus expression vector pAC-kappa-Fc to express intact IgG. Secreted products were purified with affinity chromatography using protein G.</p><p><b>RESULTS</b>SDS-PAGE and Western blot confirmed the expression of the intact IgG. Immuno-blotting and -precipitation were used to identify HCMV proteins. One Fab monoclonal antibody recognized a conformational HCMV protein.</p><p><b>CONCLUSION</b>IgG antibodies can neutralize the HCMV AD169 strain efficiently at a titer of 2.5 microg/mL and may prove valuable for passive immunoprophylaxis against HCMV infection in humans.</p>

Clinical effect and safety of miconazole nitrate 1200 mg in treating vulvovaginal candidiasis / 中华妇产科杂志

Objective To investigate the clinical effect and safety of miconazole nitrate 1200 mg in treating vulvovaginal candidiasis(VVC).Methods An open,multicentre,non case control clinical trial was conducted in 568 patients suffering from VVC from Jul 1,2006 to Nov 30,2006.Routine examination,score of clinical symptoms and physical signs,mycetology test and safety evaluation were done in all patients before treatment,7-14 days after treatment and 30 days after treatment.Results Seven to fourteen days after treatment,563 patients could be followed and 323 patients(57.30k)were cured.The overall effective rate was 90.2%.The mycologic cure rate was 91.3%(514).Thirty days after treatment,480 patients could be followed and 411 patients(85.6%)were cured.The total effective rate was 96.0%.Mycologic cure rate was 92.3%(443/480).Adverse effect rate was 2.7%(15/563)and they were relieved without any treatment in one or two days.Conclusions Miconazole nitrate 1200 mg is effective in the treatment of WC,with good compliance and few adverse effects.Moreover,it can be accepted easily.

LC-MS/MS determination of budesonide in dog plasma / 药学学报

A liquid chromatographic-tandem mass spectrometric (LC-MS/MS) method was developed for the determination of budesonide in dog plasma. Budesonide and the internal standard triamcinolone acetonide were separated from plasma by alkalinized liquid-liquid extraction with ethyl acetate. Chromatographic separation was performed on a Capcell Pak C18 MG column with the mobile phase consisted of acetonitrile -5 mmol x L(-1) ammonium acetate (60:40, v/v) at a flow-rate of 0.50 mL x min(-1). A tandem mass spectrometer equipped with electrospray ionization source was used as detector and operated in the negative ion mode. Quantification was performed using multiple reaction monitoring (MRM) of the transitions m/z 489 --> m/z 357 and m/z 493 --> m/z 413 for budesonide and the internal standard, respectively. The linear calibration curves were obtained in the concentration range of 25.0-2000 pg x mL(-1). The lower limit of quantification was 25.0 pg x mL(-1). The intra- and inter-day relative standard deviation over the entire concentration range was less than 15%. The accuracy was in the range of -8.1% to -1.7% in terms of relative error. The method was applied to a pharmacokinetic study of budesonide controlled-release capsules in Beagle dogs. Maximal budesonide plasma level was observed after (3.5 +/- 3.3) h and the Cmax was (786 +/- 498) pg x mL(-1) after a single oral administration of 9 mg budesonide capsules, Cmax was increased to (2142 +/- 1515) pg x mL(-1) after multiple oral administration (9 mg x 5 d) of budesonide capsules. This method was selective and rapid, and the sensitivity was sufficient for the purpose of the pharmacokinetic study of budesonide controlled-release formulation.

Practice on the comprehensive experiment teaching of separation and purification of lysozyme / 中华医学教育探索杂志

The background, ideas of innovation and implementation process of the comprehensive experiment "separation and purification of lysozyme" was introduced. By the comprehensive experiment, the separate experiment content of the course of downtown engineering of biotechnology was reformed and the interest of students were greatly inspired. This work have a certain reference value to other medical schools for the innovation of the experiment teaching system of downtown engineering of biotechnology.

Simultaneous determination of ephedrine and chlorpheniramine in human plasma by a highly sensitive liquid chromatography-tandem mass spectrometric method / 药学学报

<p><b>AIM</b>To develop and validate a liquid chromatography-tandem mass spectrometric (LC/MS/MS) method for the simultaneous quantification of ephedrine and chlorpheniramine in human plasma after oral administration of a compound preparation.</p><p><b>METHODS</b>The analytes and the internal standard, diphenhydramine, were isolated from plasma by protein precipitation with methanol, then chromatographied on a Zorbax SB-C18 column (150 mm x 4.6 mm ID) using a mobile phase consisted of methanol-water-formic acid (80: 20: 0.5, v/v), at a flow rate of 0.5 mL x min(-1). A tandem mass spectrometer equipped with electrospray ionization source was used as detector and was operated in the positive ion mode. Selected reaction monitoring (SRM) using the precursor to produce ion combinations of m/z 166-->115, m/z 275-->230 and m/z 256-->167 were used to quantify ephedrine, chlorpheniramine and the internal standard, respectively. Results The linear concentration ranges of the calibration curves for ephedrine and chlorpheniramine were 0.50 - 200 microg x L(-1) and 0.050 - 20.0 microg x L(-1), respectively. The lower limits of quantification were 0. 50 microg x L(-1) for ephedrine and 0.050 microg x L(-1) for chlorpheniramine, individually. The intra- and inter-day relative standard deviation (RSD) across three validation runs over the entire concentration range was less than 9.3% for both ephedrine and chlorpheniramine. The inter-day accuracy (RE) was within +/- 3.4% for the analytes. Each sample was chromatographied within 3.3 min. The method was successfully used in pharmacokinetics study of ephedrine and chlorpheniramine in human plasma after oral administration of a compound preparation containing 5 mg ephedrine hydrochloride, 1 mg chlorpheniramine maleate, 50 mg phenytoin, 12.5 mg theophylline, 12.5 mg theobromine and 7.5 mg caffeine. No interaction among the six components was observed on their pharmacokinetic parameters.</p><p><b>CONCLUSION</b>The method was proved to be highly sensitive, selective, and suitable for pharmacokinetics investigations of different compound preparations containing low dosage of both ephedrine and chlorpheniramine.</p>

Determination of risperidone in human plasma by liquid chromatography-tandem mass spectrometry / 药学学报

<p><b>AIM</b>To develop and validate a liquid chromatographic-tandem mass spectrometric (LC-MS/MS) method for the determination of risperidone in human plasma.</p><p><b>METHODS</b>Risperidone and the internal standard, diphenhydramine, were isolated from plasma by liquid-liquid extraction with etherdichloromethane (3:2, v/v) , then chromatographed on a Zorbax Extend-C18 column (150 mm x 4.6 mm ID, 5 microm) using a mobile phase consisted of acetonitrile-water-formic acid (40:60: 0.5, v/v), at a flow rate of 0.7 mL x min(-1). A Finnigan TSQ tandem mass spectrometer equipped with atmospheric pressure chemical ionization source was used as detector and was operated in the positive ion mode. Selected reaction monitoring (SRM) using the precursor product ion combinations of m/z 411-->191 and m/z 256-->167 were used to quantify risperidone and diphenhydramine (IS) , respectively.</p><p><b>RESULTS</b>The linear concentration range of the calibration curve for risperidone was 0.025 - 50 microg L(-1). The lower limit of quantification was 0.025 microg x L(-1). The intra- and inter-day relative standard deviation (RSD) across three validation running over the entire concentration range was less than 7.1%. The accuracy was within +/- 3.8%. Each sample was chromatographed within 2.7 min.</p><p><b>CONCLUSION</b>The method was proved to be rapid, sensitive and suitable for pharmacokinetic investigations of risperidone.</p>