OBJECTIVE:To provide new identification method for processed medicinal material Chinese polyphaga(Eupolyph-aga sinensis,Steleophaga plancyi) and their adulterants by establishing molecular identification method based on Cytb genes. METHODS:The total DNA of Chinese polyphaga and their adulterants was extracted using modified saturation sodium chloride method. The Cytb genes of all samples were amplified with PCR using general primers REVCB2H and REVCBJ. The phylogenetic tree of all samples was constructed with Neighbor-Joining(NJ)method using MEGA 5.1 software. The sequences of the Cytb gene of all sampled were compared by using DNAMAN sofetware. The difference between genuine product and their adulterants were analyzed,and the specific primers Esin-F and Esin-R were designed for molecular identification in different regions. RESULTS:DNA extracted from processed medicinal insects was successful to amplify Cytb gene segments. The phylogenetic tree of all sam-ples was consistent with their genetic relationship. A fragment was amplified only from genuine product but not from other adulter-ants with the designed specific primers Esin-F and Esin-R. CONCLUSIONS:DNA extraction method from processed Chinese polyphaga and their adulterants have been established. Designed specific primers are highly specific to genuine product Chinese polyphaga,and can be used for the identification of Chinese polyphaga and their adulterants.

Objective To elucidate the MRI appearance of prostatic abscess,the DWI and enhanced MRI features.Methods 12 cases of prostatic abscesses were retrospectively analyzed,the clinical symptom mainly manifested as lower urinary tract symptoms and fever.All of the patients were given routine MR examination including DWI sequence,6 patients received further enhanced MR examination.Results In the 12 cases,there were 4 cases behaved as single type,8 cases as multifocal type.The abscess showed iso-or slightly hypo-signal intensity on T1 WI,hyper-signal intensity on T2 WI,markedly high signal intensity on DWI and correspond-ing markedly low signal intensity on ADC.Complete abscess walls showed iso-or slightly hyper signal on T1 WI,hypo-signal inten-sity on T2 WI.The mature abscess walls were thin and smooth,which showed homogeneously ring enhanced in 4 cases.The imma-ture abscess walls showed uneven thickness and moderately enhanced in 2 cases.Septum in the abscess could be found in 4 cases, which showed similar enhancement to the abscess walls,while the abscess cavity showed non-enhanced.Abscesses involved the sur-rounding structures in 2 cases,the involved area showed obvious hyper-signal on T2 WI fat-suppression sequence.Conclusion DWI is the best sequence in the diagnosis of prostatic abscess,the markedly high signal intensity on DWI is the characteristic sign.The enhanced MRI showed the walls and septa clearly,the extent and involvement of adjacent structures.The multi-parametric MRI is a prominent procedure in the diagnosis of prostatic abcess.

Autoimmune Diseases ; chemically induced ; Female ; Humans ; Interferons ; adverse effects ; Purpura, Thrombocytopenic, Idiopathic ; chemically induced ; Young Adult

Objective To investigate the effect of penehyclidine (PHCD) on Toll-like receptor 4 (TLR4)mRNA and Toll-like receptor 2 (TLR2) mRNA expression in the lung tissue in rats with acute lung injury induced by lipopolysaccharide (LPS) .Methods Sixty healthy SD rats of both sexes weighing 200-220 g were randomly divided into 5 groups ( n = 12 each) :control group (group C) , LPS group and P1-3 groups. Acute lung injury was induced by intraperitoneal (IP) LPS 8 mg/kg in LPS and P1-3 groups. PHCD 0.3, 1.0 and 3.0 mg/kg were given IP after LPS administration in P1-3 groups. The animals were anesthetized at 6 h after IP LPS. Blood samples were collected for determination of serum TNF-α and IL-6 concentrations ( by ELISA) and then sacrificed, the lungs were immediately removed for determination of TLR4 mRNA and TLR2 mRNA expression (by RT-PCR), and microscopic examination. Results LPS significantly increased TLR4 mRNA and TLR2 mRNA expression in the lung tissue and serum TNF-α and IL-6 concentrations. PHCD 1.0 or 3.0 mg/kg significantly inhibited LPS-induced increase in TLR4 mRNA and TLR2 mRNA expression in the lung tissue and serum TNF-α and ILr6 concentrations.The lung histopathologic damage was significantly ameliorated in P2 and P3 groups as compared with group LPS.Conclusion PHCD can protect the lungs against LPS-induced acute lung injury through inhibiting TLR4 mRNA and TLR2 mRNA expression in the lung tissue and reducing the inflammatory response.

Conventional digital video acquisition card can only collect but not process video frequency.This paper introduces the design of a digital video acquisition card based on C6000 DSP chip of TI company,which can process digital video automatically and communicate with mainframe through PCI interface.

Objective To discuss the electrocardiogram(EKG)positioning method to the guiding role of determining the pipe length and the accuracy of operative localization in central venous catheterization procedure. Methods Chose 32 cases of tumor patients who had center venipunture.Use the catheter taken EKG data when cath-etering,and then given validation using postoperative chest X -ray or fluoroscopy.Judgment the sensitivity,specificity and disposable catheters success rate of the EKG positioning method.Results In the 32 cases of cancer patients, 30 patients had characteristic P waves,when the chest X -ray confirmed the superior vena cava or the junction with the right atrium,one case into the right atrium,when one case of non -P -wave in the subclavian after intravenous discounts tune into the tube after it confirmed the superior vena cava.Conclusion EKG positioning method with high accuracy in the deep venous catheter in the catheter tip positioning applications.The clinical applications are feasible.

General practitioners need not only to have comprehensive knowledge and clinical competency, and also to have the soft skill that are social and personal management skills.In the residency training of general practice, it is necessary to pay attention to the soft skill development.The training institutions should adopt various measures: including soft skills cultivation in training contents, emphasizing soft skills training in the traditional teaching practice, establishing a variety of practice platforms and introducing soft skills in the evaluation and examination system.

ObjectiveTo investigate the expressions of nerve growth factor (NGF) and its receptors TrkA and p75NTR in dermatofibrosarcoma protuberans and dermatofibroma.MethodsAvidin-biotin immunohistochemical(ABC) method was used to detect the expressions of NGF and its receptors TrkA and p75NTR in paraffin-embedded tissue specimens from 17 cases of DFSP and 15 cases of dermatofibroma.Results NGF and TrkA were highly expressed in both DFSP and dermatofibroma specimens,with no significant difference between the two groups of specimens (x2 =0.11,0.02,respectively,both P ＞ 0.05),while the expression of p75NTR was significantly higher in DFSP than in dermatofibroma specimens(x2 =32,P ＜ 0.01 ).The expression of NGF was positively correlated with that of p75NTR in DFSP(R2 =0.623,P ＜ 0.01 ).ConclusionNGF may play a certain role in the development of DFSP via its high-affinity receptor TrkA and low-affinity receptor p75NTR.

Objective:To establish and evaluate a newly established method of enzyme-linked immu-nosorbent assay (ELISA) for measuring human autoantibody to folate receptor (FR).Methods: Folate receptor was extracted and purified from healthy woman placenta tissues .The protein was coated on 96-well plates.Goat monoclonal antibody was used as detecting antibody to set up the indirect ELISA proce -dure.The sensitivity, precision and linearity of the method were evaluated .Further, the method was compared with the ELISA method with commercialized bovine folate binding protein ( FBP) by determi-ning autoantibody levels in 24 individuals .Results:The measuring range of the standard curve was from 6 .25 ×10 -4 to 8 ×10 -2 ( the IgG concentration of pooled plasma from healthy donors was defined as 1 ) . The lowest detectable level was 3.13 ×10 -4 .The intra-and inter-assay coefficients of variations were 2.74%-8.07% and 4.16% -8.23%, respectively.Linearity test results were considered within acceptable limits.The data from FBP-ELISA and FR-ELISA were highly correlated ( r=0.954, P <0.001);The value from FR-ELISA was higher by 14% than that from FBP-ELISA.Conclusion: The ELISA method for measuring human autoantibody IgG to folate receptor was successfully established using human FR as coating protein .The method is sensitive and repeatable and can be used in large-scale population study .

Objective To study the effect of allicin on the growth and radiosensitivity of human pancreatic carcinoma BXPC3 cells.Methods BXPC3 cells were exposed to X-rays in the presence or absence of allicin.Cell proliferation was measured by MTT assay.Cell cycle distribution and apoptosis were detected by flow cytometry assay.Cell radiosensitivity and the influence of allicin on it was evaluated by colony formation assay.The expressions of Bax and Bcl-2 proteins were assayed by RT-PCR and Western blot.Results IC50 values of allicin on cell growth were 76.24,58.34 and 43.58 μmol/L under 12,24 and 48 h treatment,respectively.Treatment of cells with allicin obviously inhibited cell growth after irradiation and hence increased radiosensitivity (t =2.74,P ＜ 0.05).This treament also enhanced radiation-induced cell cycle arrest at G2/M phase (t =11.41,P ＜0.05),apoptosis induction (t =12.36,P ＜ 0.05),and Bax expression (t =4.83,P ＜ 0.05),but it decreased Bcl-2 expression (t =3.69,P ＜ 0.05).Conclusions Allicin could inhibit cell growth,induce cell cycle arrest and apoptosis via Bax/Bcl-2 pathway and hence increases radiosensitivity of BXPC3 cells.