In order to adapt the future need of multi-skill talented person in new century and change the traditional teaching methods in pathology practice to jurisprudence speciality,the article aims to cultivate the students' comprehensive capacity and quality and provide the experience or the lesson for other curriculum reform in the higher medical colleges and universities.

OBJECTIVE:To establish a method for the dissolution determination of Tamibarotene tablet. METHODS:HPLC was performed on the column of Diamonsil C18 with mobile phase of methanol-water-acetic acid(85∶15∶1,V/V/V)at a flow rate of 1.0 ml/min,detection wavelength was 235 nm,column temperature was 25 ℃,and injection volume was 20 μl. The paddle method was used to determine the dissolution,using pH6.8 phosphate buffer dissolution as medium,medium volume was 900 ml,the rotat-ing speed was 50 r/min,taking samples after 60 min. RESULTS:The linear range of tamibarotene was 0.801-2.804 μg/ml (r=0.999 6);RSDs of precision,stability and reproducibility tests were lower than 3%;recovery was 99.58%-100.90%(RSD=0.25%,n=9);the accumulative dissolution rate of 3 batches of samples was 98.25%,96.54%,92.38%(n=6). CONCLUSIONS:The method simple,accurate with high sensitivity and specificity,and suitable for the dissolution determination of Tamibarotene tablet.

OBJECTIVE: To explore the effects of Yiweining Recipe (YWNR), a compound Chinese herbal medicine, on expressions of metalloproteinase-2 (MMP-2) and cyclooxygenase-2 (COX-2) mRNAs in rats with endometriosis (EM). METHODS: Operational self-transplantation was applied in establishing the rat models. Detection of MMP-2 and COX-2 mRNAs was conducted with hybridization in situ. RESULTS: There were significant differences in the expressions of MMP-2 and COX-2 mRNAs between the untreated group and the high-dose YWNR-treated group. YWNR could reduce the expressions of MMP-2 and COX-2 mRNAs. CONCLUSION: YWNR can treat EM through reducing the positive expressions of MMP-2 and COX-2 mRNAs.

Objective To evaluate the feasibility of the DNA microarray method used in detecting the drug resistance of Myco-bacterium tuberculosis by comparing the traditional proportion method and the DNA microarray method for detecting the drug re-sistance of Mycobacterium tuberculosis.Methods 54 strains of Mycobacterium tuberculosis isolated from clinical specimens in our hospital from January 2012 to March 2013 were randomly extracted and their resistance to isonicotinic acid hydrazide (INH)and rifampicin(RFP)was detected by the DNA microarray method and the proportion method.The detection results were performed the comparative analysis.Results With the proportion method as the golden standard,the coincidence rates of the DNA microarray method for detecting the Mycobacterium tuberculosis resistance to INH and RFP were 75% and 91.0% respectively.Conclusion The DNA microarray technique is suitable for the rapid screening of clinical first-line drug resistant Mycobacterium tuberculosis.

Objective To estimate the effect of berberine on the proliferation of and expressions of apoptosisrelated factors Bax and Bcl-2 in a human skin squamous cell carcinoma cell line A431.Methods A431 cells were cultured in vitro,and classified into various groups to be treated with berberine at different concentrations (12.5,25,5,100 mg/L) or cisplatin at 250 mg/L (positive control group) for different durations (12,24,48 and 72 hours).The A431 cells remaining untreated served as the negative control group.Subsequently,methyl thiazolyl tetrazolium (MTT) assay was performed to evaluate cell growth,and inverted microscopy to observe cell morphology.Real time quantitative reverse transcription-PCR and an immunofluorescence assay were conducted to measure the mRNA and protein expressions of Bax and Bcl-2 respectively.Statistical analysis was done by multi-way analysis of variance (ANOVA) using the software SPSS 13.0.Results MTr assay showed that berberine inhibited the growth of A431 cells,and the inhibitory effect increased with the increase in concentration (F =1118.312,P ＜ 0.001) and treatment duration (F =510.927,P ＜ 0.001) of berberine.Moreover,there was a significant interaction between the concentration and treatment duration of berberine (F =70.239,P ＜ 0.001).Inverted microscopy revealed that when the concentration of berberine increased,cell density was reduced,and cell morphology changed from polygonal to round with cell body shrinkage.The ratio of bax to Bcl-2 mRNA was elevated with the increase in treatment duration and concentration of berberine,and there were significant differences in the mRNA ratio among cells treated with berberine for different time durations at same concentrations (F =226.231,1300.636,4325.139 for berberine at 25,50 and 100 mg/L respectively,all P＜ 0.001).Immunofluorescence staining indicated that the fluorescence intensity of Bax was enhanced,while that of Bcl-2 was weakened after berberine treatment.Conclusions Berberine inhibits the growth of A431 cells in a dose-and timedependent manner,and may induce the apoptosis of A431 cells via regulating the expressions of Bax and Bcl-2.

Objective To study the expression and the significance of phosphorylated P38(p-P38) and uPA in breast cancer tissues.Methods Immunohistochemistry(S-P) was used to test the protein expression of p-P38 and uPA in 60 specimens from 50 patients with breast cancer.Western blotting was adopted to detect the protein expression of p-P38 and uPA in breast cancer cells and uPA protein expression after incubation with SB203580,an specific inhibitor of P38 MAPK blocked P38 MAPK signaling pathway.Results The positive rates of p-P38 protein and uPA protein in breast cancer tissues were 56.7%and 60.0% respectively.The protein expression level of p-P38 and uPA in breast cancer tissues was significantly higher than that in adjacent normal tissues(P

Gitelman's syndrome (GS) is an autosomal recessive hereditary tubulopathy.It is caused by sodium reabsorption in the distal convoluted tubule of the renal unit,which is not yet fully cured.It is characterized by great heterogeneity with clinical manifestations.Some patients with no symptoms,were confirmed by hypokalemia with physical examination.The others can be manifested as fatigue,nocturia,polydipsia and hypotension.Less literature is reported about GS combined with osteoarthrosis.In this report,the author reported a patient of GS with osteoarthrosis characterized by hypokalemia,hypomagnesemia,metabolic alkalosis,lower blood pressure,and swelling and pain in left knee joint.The symptoms were improved after treatment with potassium and magnesium supplementation

Objective To explore the plasma level of retinol binding protein 4 (RBP4) in patients with es-sential hypertension (EH) of Xinjiang Kazakans and the relations between plasma RBP4 level and blood pressure, blood lipids,blood glucose, insulin, and HOMA-IR. Methods 81 Kazakans cases who were investigated between August and November of 2008 were selected as subjects. They were divided into EH group(n=41)and control group (n=40). Blood pressure was measured. Fasting venous blood was drawn to detect the plasma RBP4, fasting insulin (FINS), fasting plasma glucose(FPG), total cholesterol(TC), triglyceride(TG), high density lipoprotein cholesterol (HDL-C)、low density lipoprotein cholesterol (LDL-C), apoprotein-A1 (APO-A1) and apoprotein-B (APO-B), and concentration in EH group was significantly higher than that in control group[ (32.74±9.93) mg/L vs (21.92± pressure (DBP),FPG,and HOMA-IR in EH group(r,=0.618,0.775,0.565,0.317,0.369,P<0.01 or P< showed that SBP was independent factor to affect the RBP4 level in EH group(Standardized Coefficients is 0.591, t=5. 695, P=0.000). Conclusion The plasma RBP4 concentration is increased in patients with EH of Kazakans, and is positively correlated with SBP,DBP,FPG,HOMA-IR in EH group. RBP4 may involve in the development of EH by promoting insulin resistance.

Objective To investigate the clinicopathologic features of GIST. Method Fifty-five GIST cases were collected. Immunohistochemical assays of vimentin, CD117, CD34, S-100, SMA, desmin, NF were used to study the specimen. Results 69% (38/55) of the tumors located in the stomach, 18% (10/55) in the small intestine. Tumors varied greatly in size, ranging from 0.4 to 40 cm (average 6.7 cm). Morphologic criteria of malignancy are tumor size≥5 cm, mitotic rates≥5/50 HPF and ulcer formation and there were significant differences between the benign and the malignant. Immunohistochemical staining results: CD117 positive in 39 cases(71%), CD34 in 45 cases (82%), S-100 in 19 cases (35%), SMA in 12 cases (22%), vimentin in 32 cases (58%), desmin in 6 cases(11%),and NF in 2/4 (50%). All 13 benign cases were alive on the latest follow-up. In 42 cases of malignancy and potential malignancy, 4 developed metastasis, 13 died. Conclusion (1) GIST occur predominantly in middle-aged and older persons.(2) The main criteria of malignancy of GIST are tumor size≥5 cm, mitotic rates≥5/50 HPF and ulcer formation. (3)Whereas it is difficult to identify true leiomyomas/leiomyosarcomars and neuogenic tumors from GIST, immunohistochemical staining is capable of doing this.

A matrix solid phase dispersion ( MSPD) method was developed for the simultaneous preparation of samples of 15 mycotoxin biomarkers including deoxynivalenol, aflatoxins and zearalenone from eggs, which were subsequently determined by liquid chromatography-electrospray ionization tandem mass spectrometry ( LC-ESI-MS/MS) under the multiple reaction monitoring ( MRM) mode. For the analysis, the samples were first mixed with C18 particles and loaded into an empty column, then 20 mL of acetonitrile/methanol (1:1, V/V) containing 1 mmol/L ammonium formate was used to elute the sample. The eluent was then dried with nitrogen flow and redissolved into the mobile phase. After filtration, samples were brought into vials and used for analysis. Different from other methods, no extra complicated purification and centrifugation steps were required in the procedure of MSPD. This method had good linearity in the range of 0. 2-100 ng/mL, with the correlation coefficient (r2) greater than 0. 9931. The limits of detection (LODs, S/N=3) and limits of quantification ( LOQs, S/N=3 ) of this method were 0. 05-2 μg/kg and 0. 2-4 μg/kg respectively. Comprehensive extraction recoveries of the 15 compounds ranged from 61% to 90%.