OBJECTIVETo discuss the effect of taurine (Tau) on the proliferation of hypoxia-induced pulmonary artery smooth muscle cells (PASMCs), and study whether the extracellular signal-regulated kinase 1/2 (ERK1/2) signal pathway participated in the Tau-inhibited PASMC proliferation process and the possible molecular mechanism.

METHODThe primary culture was performed for PASMCs in rats. The second to fifth generations were adopted for the experiment. The Tau concentration was 80 mmol x L(-1). The concentration of ERK1/2 blocker (PD98059) was 50 micromol x L(-1). The drug administration time was 24 h. The effect of Tau on the PASMC proliferation was detected by MTT assay, immunofluorescence staining method and western blot under different conditions. The PASMCs were growing were divided into four groups: the normoxia group, the normoxia + Tau group, the hypoxia group and the hypoxia + Tau group. The Western blot was adopted to detect whether the ERK1/2 signal pathway participated in the Tau-inhibited PASMC proliferation process. Subsequently, the PASMCs were divided into five groups: the normoxia group, the hypoxia group, the hypoxia + Tau group, the hypoxia + Tau + PD98059 group and the hypoxia + PD98059 group.

RESULTHypoxia could induce the PASMC proliferation. Under the conditions of normoxia, Tau had no effect on the PASMC proliferation. Under the conditions of normoxia and hypoxia, Tau had no effect on the expression of the tumor necrosis factor-alpha (TNF-alpha) among PASMCs. Tau could reverse the expression up-regulation of hypoxia-induced proliferative cell nuclear antigen (PCNA) (P < 0.01) and Cyclin A (Cyclin A) (P < 0. 05). Under the conditions of normoxia, Tau had no effect on the expression of phosphoryl extracellular signal-regulated kinase 1/2 (p-ERK1/2). Hypoxia could up-regulate the p-ERK1/2 expression (P < 0.01). Tau could reverse the up-regulation of the hypoxia-induced p-ERK1/2 expression(P < 0.01). Both PD98059 and Tau could inhibit the up-regulated expressions of PCNA, Cyclin A and p-ERK1/2. According to the comparison between the single addition of Tau and PD98059 under conditions of hypoxia, the hypoxia + Tau + PD98059 group showed more significant down-regulation in the expressions of PCNA, Cyclin A and p-ERK1/2.

CONCLUSIONTau could inhibit the hypoxia-induced PASMC proliferation, and may regulate it through ERK1/2 pathway.

Animals ; Cell Hypoxia ; drug effects ; Cell Proliferation ; drug effects ; Cells, Cultured ; MAP Kinase Signaling System ; drug effects ; Myocytes, Smooth Muscle ; cytology ; drug effects ; metabolism ; Oxygen ; metabolism ; Pulmonary Artery ; cytology ; drug effects ; metabolism ; physiopathology ; Rats ; Rats, Wistar ; Taurine ; pharmacology ; Tumor Necrosis Factor-alpha ; genetics ; metabolism

Congresses as Topic ; Otolaryngology ; Otorhinolaryngologic Diseases ; surgery

OBJECTIVE:To investigate the occurrence of ADR induced by Shuxuening injection in Beijing area,and to pro-vide reference for rational drug use in clinic. METHODS:ADR induced by Shuxuening injection in Beijing area during 2003-2013 was classified statistically in respects of population,organs/systems involved in ADR,clinical manifestations,occurrence time, drug combination and prognosis. RESULTS:Of 1648 ADR cases,the incidence of ADR in the elderly patients was higher than young patients,and that of female patients (60.92％) was higher than that of male patients (39.14％). Multiple organs/systems were involved in Shuxuening injection-induced ADR,and top 3 were nervous system (422 cases,21.33％),skin and its appen-dants (411 cases,20.78％) and others (305 cases,15.42％). Clinical manifestations were skin rash,itching,dizziness and ner-vousness,palpitation,arrhythmia,etc. ADR mostly occurred within 5-30 min after medication. In ADR reports,there were a vari-ety of drugs combined with Shuxuening injection. Shuxuening injection combined with Alprostadil injection was most common(61 cases,accounting for 23.46％ of drug combination). Among 1648 ADR cases,there were 622 cured cases and 1039 cases im-proved,4 cases were not improved,3 cases had sequelae and 1 case died. CONCLUSIONS:Clinical application of Shuxuening in-jection should strictly follow the indications of drug package inserts;differentiation of symptoms and signs is based on specific dos-age,solvent,route of administration,etc. It is necessary to strengthen the prescription check,and strengthen the observation after medication especially for the elderly and other special groups so as to reduce and avoid ADR.

In Chongqing Medical University,Introduction to Clinical Medicinewas first launched in 2002. In this article, based on the summary of 2014 to 2015, we summarized respectively from teaching material construction, evaluation system with combination of formative assessment and summative assess-ment, network support platform, teaching quality monitoring system, and student questionnaire survey and evaluation. Through the study of the course, 99.5% (836/840) of the students think their team conscious-ness and cooperation ability were improved, 94.2% (791/840) of the students consider this course can im-prove their innovative ability of self-learning, 87.0% (731/840) of the students think it is beneficial to the improvement of their self expression ability and more than 78.0% of the students think they have achieved the goal of early clinical contact, expanding knowledge, and enhancing the basic professional quality.

Brainstem infarction accounts for about 9% to 21.9% of all cerebral infarctions. This article reviews the etiology of brainstem infarction and its pathogenesis,clinical manifestation,diagnosis,and treatment.

Objective:It intended to examine whether there is BDV infection in the human tumor tissues of central nervous system in China and investigate the correlation between BDV infection and tumom of central nervous system.Methods:Nested reverse transcriptase polymerase chain reaction(nRT-PCR)and fluorescence quantitative polymerase chain reaction(FQ-PCR)was used to detect the BDV p24 fragments in 60 samples of human tumor tissues of central nervous system and 14 normal brain tissues.Results:The study indicated the positive rate of the BDV p24 fragment in human tumor tissues of the central nervous system (6.67%)was higher than that in normal brain tissues(0),but no statistical significance(P>0.05).Concluswn:It suggests that the BDV infection is present in the human tumor tissues of central nervous system in China.while the sample size wa.sn't large enough and we could not certify the possible correlation between BDV infection and cenfral nervous system tumors.

Objective To find a proper way for accurate results on completing blood counts.Methods Based on the results from automatic hematology analyzer XE-2100,set up the criteria for blood cell microscopic examination.1368 blood specimen were detected and the results were analyzed according to the criteria.Statistics on the data were made to evaluate the accordance between warnings of analyzer and manual examination,likewise the reliability of the criteria.Results Comparing with microscopic examination,analyzer warning on low PLT has good accordance,Kappa value was 0.95,U value was 35.19,P

Objective To evaluate the value of ventilation and perfusion scintigraphy for predicting the postoperative pulmonary function in patients with lung cancer. Methods Twenty-six patients with lung cancer, male 21 and female 5, aged from 44 to 86 ys, were recruited into the study. Before surgery, 21 patients underwent 99Tcm-DTPA aerosol ventilation and 99Tcm-macroaggregated albumin ( MAA ) perfusion scintigraphic imaging. The other five patients were studied with perfusion imaging only. Pulmonary function was measured as forced expiratory volume in the first second ( FEV1 ) at about one week before surgery for all patients, and at two months after surgery. The predicted postoperative FEV1 ( ppoFEVt ) was calculated by Neuhaus' formula based on the ventilation or perfusion function obtained from scintigraphy studies, and compared with the measured post surgery FEV1. Eighteen patients underwent the surgical resection successfully. The t-test and correlation analysis were used. Results The ppoFEV1 values of ventilation and perfusion were (1.347±0.539) Land (1.410±0.543) L, respectively (n=21, t =0.062, P＞0. 05). Both the ppoFEV1 values of ventilation and perfusion showed no significant difference with the respective post-surgeryFEV1(n=13, (1.545 ±0.588) Lvs (1.45 ±0.521) L, t=0.092, P＞0.05; n=18, (1.697±0. 546) L vs ( 1.457±0.488) L, t =0. 017, P ＞0.05, respectively). Both the ventilation ppoFEV1 (n =13) and perfusion ppoFEV1 (n = 13, n = 18) correlated well with the post-surgery FEV1 respectively (r =0. 950, 0. 937, 0. 922, all P ＜ 0. 01 ). Conclusion Ventilation and perfusion imaging can predict the postoperative pulmonary function for patients with lung cancer, especially for those with borderline pulmonary function, thus useful for selection of suitable candidates for surgical resection.

To analyze and compare the protective effects of active components in different ethyl acetate extracts (EAEEPs) from Eclipta prostrate, in order to study the comparison of materials bases protecting normal human bronchial epithelial (NHBE) cells. The MTT assay was taken to compare the protective effect of different EAEEPs on cigarette smoke extracts (CSE) -induced NHBE cells. The ultra-performance liquid chromatography (UPLC) was applied to analyze the content of phenolic acid, coumaric grass ether and flavonoid in EAEEPs. According to the results, all of the eight EAEEPs (0-200 mg x L(-1)) showed certain protective effect on NHBE cells, with statistical difference. Specifically, the total mass of EAEEP VII (89.15 mg x L(-1)) and EAEEP VIII (57.44 mg x L(-1)), which showed the strongest activity, was not the highest, while EAEEP III (132.25 mg x L(-1)) displayed the highest total mass. In the combination with the "component structure" theory, the analysis showed a significant difference in the mass structure among phenolic acid, coumaric grass ether and flavonoid in EAEEP VIII and EAEEP VIII, which were 1.0: 1. 0: 0.5 and 1.0: 1.9: 0.8, respectively. The results suggested a specific optimal "component structure" relationship may exist in EAEEP, which could provide reference for the material base study and quality control.
Bronchi ; cytology ; drug effects ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; pharmacology ; Eclipta ; chemistry ; Epithelial Cells ; cytology ; drug effects ; Humans ; Protective Agents ; chemistry ; isolation & purification ; pharmacology ; Tobacco Smoke Pollution ; adverse effects

Objective To establish an HPLC method for the content determination of protodioscin and diosgenin in Dioscoreae Hypoglaucae Rhizoma from different habitats.Methods The chromatographic separation was performed on an Agilent C18 column (4.6 mm×150 mm, 5μm) with mobile phase of acetonitrile-water solution with gradient elution at the flow rate of 0.8 mL/min; the detection wavelength was 208 nm; the column temperature was 30℃; the injection volume was 20μL.Results Protodioscin showed a good linear relationship among the range of 1.73–8.64 μg (r=0.999 6), with the average recovery of 101.98% (RSD=1.53%); Diosgenin showed a good linear relationship among the range of 1.03–8.20μg (r=0.999 1), with the average recovery of 101.60% (RSD=2.41%). The contents of protodioscin and diosgenin in Dioscoreae Hypoglaucae Rhizoma from 10 different habitats were in the range of 0.89%–2.24% and 0.75%–3.22%, respectively.Conclusion The method is simple, accurate and with repeatability, which can be used as quality control method of Dioscoreae Hypoglaucae Rhizoma.