To study the effects of connective tissue mast cells ( CTMCs ) on T cell activation in an antigen-dependent manner.Methods: Connective tissue mast cells were differentiated from mouse bone marrow cells.Alexa Fluor 488-conjugated ovalbumin (OVA)/IgG immune complexes were generated and incubated with CTMCs ,and analyzed by flow cytometry to detect the antigen uptake by CTMCs via Fcγreceptors ( FcγRs ).The relevant effects on antigen-specific T cell activation and proliferation were further determined by CD 69 and Ki67 expression.Results: A magnificent increase in OVA uptake was seen in CTMCs treated with OVA/IgG immunocomplex after 24-hour incubation ,compared with that treated with fluorescent OVA alone.OVA-incorporated mast cells induced OVA-specific CD4+T-cell activation and proliferation.Conclusion:It was suggested that the binding of IgG receptor FcγRs could elicit CTMCs reaction and ,as a result,to mediate crosstalk between professional APCs and T cells.

The self-made high sensitivity and selectivity micro-biosensor was applied to monitor the change of dopamine in cerebral nucleus in rats in vivo. The micro-biosensor was prepared and used to detect dopamine level in vitro and monitor the dynamic change of dopamine in different cerebral nucleus in vivo. The results showed the lowest concentration of dopamine that could be detected by the biosensor was 32.5 nmol/L. Its positive peak was significantly different from that of AA, 5-HTP and E. The biosensor could keep working for monitoring the dopamine concentration in the cerebral tissue for more than 10 h. It was concluded that the microsensor has high sensitivity and selectivity to dopamine and can be used to dynamically monitor the change of dopamine in vivo.
Biosensing Techniques/*instrumentation ; Biosensing Techniques/methods ; Brain Chemistry ; Corpus Striatum/*metabolism ; Dopamine/*analysis ; Microelectrodes ; Monitoring, Physiologic

Objective To compare the effects of intracoronary verapamil on coronary flow,myocardial perfusion and clinical outcome during primary percutaneous coronary intervention(PCI) for acute ST elevation myocardial infarction(STEMI).Methods A total of 99 consecutive STEMI patients undergoing primary PCI were randomly assigned to receive intracoronary verapamil or intracoronary heparinised saline immediately after stent deployment.Coronary flow was assessed by Thrombolysis in Myocardial Infarction(TIMI) flow grade(TFG) and corrected TIMI frame count(CTFC),and myocardial perfusion was assessed by TIMI myocardial perfusion grade(TMPG) and TIMI myocardial blush grades(MBG).Coronary and myocardial perfusion were assessed before and after PCI,as well as after drug administration by two doctors independently.Echocardiography were performed one week after PCI.Incidence of major adverse cardiac events in hospital and 3 months follow-up were compared between the two groups.Results Eight patients were excluded from the final analysis.Among the remaining 91 patients,47 patients were in the verapamil group and 44 patients were in control group.Baseline characteristics and angiographic characteristics were not significantly different between the two groups.CTFC,TFG,TMPG,and MBG before and after PCI were of no significant differences between the two groups.However,after drug administration,the verapamil group showed better outcome compared with the control group in CTFC(27.1?14.2 vs 39.0?23.8,P=0.011),TFG≥2(100% vs 90.9%,P=0.035),MBG≥2(91.5%% vs 75.5%,P=0.034),and TMPG≥2(89.4% vs 72.7%,P=0.042).LVEF measured by echocardiography was not significantly different between the two groups one week after PCI.The combined incidence of MACE in hospital(4.3% vs 9.1%,P=0.613) and at 3-month follow-up(23.9% vs 22.7%,P=0.894) was similar between the verapamil group and the control group.Conclusion Intracoronary administration of verapamil can improve coronary flow and myocardial perfusion in STEMI patients underwent primary PCI but show no obvious improvement in short-time clinical prognosis.

AIM: To investigate the effect of combination of traditional Chinese and western medicine treatment on active tuberculosis patients and the impact on peripheral blood T-lymphocyte subsets. METHODS: 133 cases of active pulmonary tuberculosis patients were divided into two groups.The clinical effects of two groups were compared and Tlymphocyte subsets were detected. RESULTS: The total effective rate was 95.8%,its efficacy was superior to the control group(P

Objective To explore effects of paclitaxel on proliferation and migration of breast cancer Michigan Cancer Foundation-7 (MCF-7) cells via mammalian target of rapamycin (mTOR) signaling pathway.Methods The cases were randomly divided into four groups,including control group,paclitaxel low-dose group (0.25 μmol/L),paclitaxel medium-dose group (0.5 μmol/L),and paclitaxel high-dose group (1 μmol/L).The viability of MCF-7 cells was measured with methyl thiazolyl tetrazolium (MTT) assay.MCF-7 cell cycle was examined with flow cytometry.MCF-7 cell migration was tested with transwell migration assay.The levels of mTOR signalling pathway-related protein were assayed with Western blot.Results Compared to the control group,MCF-7 cell viability was significantly decreased in paclitaxel low,medium and high-dose groups (P ＜ 0.05),and the inhibitory rate was highest at 48 h (P ＜ 0.05).MCF-7 cell migration was significantly inhibited in paclitaxel low,medium and high-dose groups [(98 ± 9.78) vs (86.21 ± 6.58),(53.41 ± 3.16) and (42.00 ± 4.69),P ＜ 0.05].Moreover,compared to the control group,the number of MCF-7 cells at G1 phase was significantly increased in paclitaxel low,medium and high-dose groups [(52.14±6.13)％ vs (67.93 ±8.16)％,(72.32 ±3.67)％ and (78.53 ± 6.28)％,P ＜ 0.01],the number of MCF-7 cells at G2 phase was significantly reduced in paclitaxel low,medium and high-dose group [(13.68 ± 0.85) ％ vs (8.57 ± 1.03) ％,(5.30 ± 0.89) ％ and (3.46 ± 0.78) ％,P ＜0.01].The phosphorylations of 4E binding protein (4EBP1) and mTOR proteins as well as the expressions of cell-cycle protein D1 (Cyclin D1) and matrix metalloproteinase-9 (MMP-9) were significantly inhibited in paclitaxel low,medium and high-dose groups (P ＜ 0.01).Conclusions These results suggested paclitaxel could inhibit proliferation and migration in breast cancer MCF-7 cells,which might be related to mTOR signal pathway.

Objective:To investigate the enantiomer separation for atropine by capillary electrophoresis .Methods:Capillary elec-trophoresis was used with an elastic quartz capillary column (60 cm ×75 mm, effective length of 40 cm).The concentration of phos-phate buffer was 30 mmol· L-1 .The high and time of injection was 10 cm and 5 s, respectively.The detection wavelength was 225 nm.The best separation conditions were selected including the type and concentration of chiral resolving agent , pH of the buffer solu-tion, operating voltage and organic solvent.Results:The optimum conditions of separation were as follows:the pH of buffer solution was 7.0, the concentration of S-β-CDP was 10 mg· ml-1 , and the operating voltage was 12 kV.Conclusion: The method is simple and fast, which can be used to se parate the optical isomers of atrpo ine.

Objective To investigate the clinicopathological features,diagnosis and treatment experience,in order to improve the recognition of male breast cancer and prepare for the study of standardized treatment of breast cancer.Methods Data of epidemiological characteristics,clinical and pathological parameters,treatment and outcome from 43 male breast cancer patients were collected and analyzed in Peking University Cancer Hospital and Beijing Hospital from January 2009 to December 2014.Results Of these patients,42 (97.6％) cases presented with located tumors,11 (25.5％) cases were on pathological stage Ⅲ or stage Ⅳ,and 40 (93.0％) cases were with hormone receptor positive breast cancer and 3 (6.9％) cases were with human epidermal growth factor receptors (HER)-2 positive breast cancer.Patients were stratified according to more or less than 70 years of age,and there were no significant differences in clinicopathological features between the two year groups.But 3 cases with HER-2 over-expressed were all less than 70 years old.38 (88.4％) patients underwent surgical treatment,among which 32 HR-positive patients (74.4％) received tamoxifen as adjuvant endocrine therapy.The median follow-up periods was 31 months (6.1-55.4 months),7 (16.3％) patients developed local recurrence or distant metastasis.Conclusions Male breast cancer is often diagnosed at a later stage and has inferior outcome.Majority of male breast cancer are found to be HR positive,hence hormonal therapy should be strongly considered.

Objective To evaluate the distribution of Modic changes of cervical endplate in patients with cervical spondylotic myelopathy and its related factors.Methods All of 426 patients with cervical spondylotic myelopathy were examined by MRI scan and X-ray.According to the criteria of Modic changes,the distribution feature of Modic changes in cervical endplate on age,course of disease,segment and grade of intervertebral disc degeneration were retrospectively analyzed.Results Among 2556 intervertebral discs in 426 cases of patients,54 (12.7 ％) patients and 69 (2.3 ％) intervertebral discs were involved with Modic changes.22 (0.8％) discs in 15 (3.5％) cases were type Ⅰ; 34(1.2％) discs in 31 (7.3％) cases were type Ⅱ ; 13 (0.3％) discs in 8 (1.9％) cases were type Ⅲ.There were 0 (0) lesion in C2-3 disc,5 (0.2％) in C3-4,16 (0.6％) in C4-5,26 (1.0％) in C 19 (0.7％)in C6-7 and 3 (0.1％) in C7T1.Modic changes were distributed mainly over the age of 40 and correlated with disc degeneration,disc level,condition of cervical curve,course of disease and ages,moreover,disc degeneration played the most important role in the occurrence of Modic changes.Conclusion Modic changes of cervical endplate mainly occur in C5-6,and type Ⅱ is the most and type Ⅲ is the least.Modic changes are distributed mainly over the age of 40 and correlated with disc degeneration,disc level condition of cervical curve,course of disease and ages,moreover,disc degeneration plays an important role in the occurrence of Modic changes.

OBJECTIVE: To study the modulation of Jianjining Recipe (JJNR), a traditional Chinese compound herbal medicine for invigorating spleen and kidney on differential protein expression in spleen of rats with experimental autoimmune myasthenia gravis (EAMG). METHODS: EAMG rats were randomly divided into four groups: untreated group, JJNR-treated group, Qiangji Jianli capsule (QJJLC, a traditional Chinese compound herbal medicine)-treated group and prednisolone acetate (PA)-treated group. After therapeutic intervention with the above drugs for four consecutive weeks, the level of differential protein expression was analyzed by two-dimensional electrophoresis and matrix assisted laser desorption/ionization time-of-flight mass spectrometry. RESULTS: Twelve differential proteins were identified by comparing EAMG rats and normal rats. The levels of allograft inflammatory factor-1, peroxiredoxin I and actin-related protein 2/3 complex subunit 5 were significantly regulated by JJNR (P<0.01). These proteins were closely associated with immune response and cell movement. CONCLUSION: The results suggest that there are differential protein expressions between EAMG rats and normal rats. Furthermore, as a Chinese medicine prescription with effect of invigorating spleen and kidney, JJNR can effectively regulate the levels of some EAMG-related protein expression.

HepG2 cells were pre-incubated with insulin (Ins 0,1,0. 1,0.01 μol/L) and dexamethasone ( Dex 0,3,0. 3,0.03 μol/L) alone or together for 24 h to induce insulin resistance (IR) in vitro, the resistant level was estimated by glucose consumption, the optimal model of insulin resitance was chosen, and at the same time its lasting time of resistance was determined. In order to investigate the effects and mechanisms of mifepristone on in sulin-resistant HepG2 cells induced by insulin and dexamethasone, mifepristone and pioglitazone were adminis tered 24 h after the optimal model of insulin-resistant HepG2 cells was established. The glucose consumption, in tracellular concentrations of glucose, glycogen, ATP, and free fatty acid (FFA) in each group were detected. The expression of InsR-mRNA and GR-mRNA was detected by semi-quantitative reverse transcription and polymerase chain reaction (SqRT-PCR). Results revealed that pretreatment with insulin (0. 1 μmol/L) and dexamethasone (0.3 (μol/L) for 24 h caused optimal insulin resistance of HepG2 cells which lasted for 36 h. Compared with control group, the glucose consumption, intracellular glucose, glycogen, ATP contents and the level of InsR-mRNA in model cells decreased while FFAs concentrations and GR-mRNA increased. However, the tendency of insulin resistant HepG2 cells was obviously attenuated by pioglitazone at the concentration of 0. 2 mmol/L and mifepris tone at 200μmol/L and 20 μol/L while mifepristone at 2 μol/L had no effect on insulin-resistant cells. The findings indicated that mifepristone at 200 μol/L and 20 μol/L improved the insulin resistance via modulating intracellular glucolipid metabolism and the expression of InsR-mRNA and GR-mRNA.