Objective To observe clinical effect of self-made xiaozhongsanjie decoction combined with levothyroxine sodium tablets in treatment of thyroid nodule.Methods From July 2013 to July 2014, 52 cases of thyroid nodule patients were randomly divided into two groups: control group( n=25)and study group(n=27).The control group were received levothyroxine sodium tablets, while the study group were given self-made xiaozhongsanjie decoction on the basis of control group.Both groups were treated for 24 weeks.The changes of thyroid stimulating hormone ( TSH ) , serum free triiodothyronine (FT3), serum free tetraiodothyronine (FT4) levels, and the thyroid nodule size of two groups before and after treatment were recorded and compared.ResuIts After 24 weeks’ treatment, the thyroid nodule size of both groups reduced, and the descending range of study group was much larger than that of control group (P<0.05).The TSH levels of both groups descended, and the descending range of study group was much larger than control group (P<0.05).While the FT4 levels all increased in both groups, and the ascending range of study group was much larger than control group (P<0.05).And the total effective rate of study group was 77.78%, which was significantly higher than control group (48.00%, P<0.05). ConcIusion The therapy of self-made xiaozhongsanjie decoction combined with levothyroxine sodium tablets in treatment of thyroid nodule could control or reduce the thyroid nodule size effectively.

OBJECTIVE:To establish a rapid,sensitive,accurate and stable method for the determination of voriconazole in human plasma in order to monitor clinical use of voriconazole. METHODS:HPLC-UV detection method was applied using carba-mazepine as internal standard. Plasma samples were treated with acetonitrile protein precipitation. The determination was performed on Phecda C18 column with 20 mmol/L monopotassium phosphate buffer solution (pH 6.0)-acetonitrile (50∶50,V/V) as mobile phase at flow rate of 1 ml/min. The column temperature was 40℃ and detection wavelength was 255 nm. The injection volume was 50 μl. RESULTS:The retention time of voriconazole and internal standard were 8.34 and 6.24 min. The linear range of voricon-azole in plasma were 0.10-20.00 μg/ml(r=0.999 5). The lowest limit of quantitation was 0.05 μg/ml. Intra-day and inter-day RSD were below 1.57% and 1.45%,respectively. The extraction recovery of low,medium and high concentrations were between 81.40%to 128.29%. CONCLUSIONS:The method is simple and accurate for therapeutic drug monitoring(TDM)of voriconazole.

AIM: To investigate the vasorelaxant effect and mechanism of EtOAc extract from Chrysanthemum morifolium Ramat (CME). METHODS: The effects of CME on the contraction of rat thoracic a orta were examined. RESULTS: CME caused concentration-dependent relaxation of aorta rings precontricted with phenylephrine and K+. The effect in endothelium-intac t aorta was more effective than that in endothelium-deduced aorta. NG-nitro-L- arginine methylester, methylene blue and glibenclamide attenuated the effect of C ME significantly. However, indomethacin, propranolol, tetraethylammonium, BaCl 2, 4-aminopyridine and 5-hydroxydecanoate did not affect CME effect. The effect of SKF-525A combined with L-NAME had no obvious difference with that of L-NAME o n CME-induced relaxation. NOS activity in aorta was increased markedly by CME in vitro. CME did not reduced the contraction elicited by PE in Ca 2+-f ree medium, but reduced the contraction induced by PE in K+-free solution or C a 2+ free following input Ca 2+. CONCLUSION: CME induces both endothelium-dependent and independe nt relaxation. NO and cGMP are likely involved in the endothelium-dependent rela xation, inhibition of voltage-dependent or receptor-operate Ca 2+ channel a nd activation of ATP-sensitive K+ channel contribute in part to the endotheliu m-independent relaxation by CME.

AIM: To investigate relationship between activity of matrix metalloproteinases-2 ( MMP-2, 72 kD) and invasion, metastasis of breast cancer. METHODS: Useing zymography and computer software assisted analysis, the activitive levels of MMP-2 (72 kD) in tissues from breast cancer were measeured. RESULTS: Mean activitive levels of MMP-2 72 kD (13.93?3.60) in breast cancer were lower than those in benign disease (21.43?8.31), P0.05) in MMP-2 62 kD+72 kD of benign and malignant disease, but MMP-2 62 kD (13.83?4.53) and MMP-2 62 kD/62 kD+72 kD(0.48) respectively were significantly higher in malignant disease (P

Humanized medical service should take Benevolence as the goal and run throughout the whole process of diagnosis and treatment of rheumatic immune diseases.Through the discussion on improving doctors' medical skills and paying attention to patients' mental health and physiological needs in the department of rheumatology and immunology,this paper put forward that it should improve the patient's disease control rate,prolong the survival,improve the quality of life and build a harmonious relationship between doctors and patients through the humanized treatment program,health education and follow-up.

AIM: To investigate relationship between activity of matrix metalloproteinases - 2 ( MMP - 2, 72 kD) and invasion, metastasis of breast cancer. METHODS: Useing zymography and computer software assisted analysis, the activitive levels of MMP- 2 (72 kD) in tissues from breast cancer were measeured. RESULTS: Mean activitive levels of MMP- 272 kD (13.93 + 3.60) in breast cancer were lower than those in benign disease (21.43 + 8.31), P < 0.05. There was no difference (P > 0.05) in MMP - 2 62 kD + 72 kD of benign and malignant dis ease, but MMP - 262 kD ( 13.83 + 4.53) and MMP - 262 kD/62 kD + 72 kD (0.48) respectively were significantly higher in malignant disease (P < 0.01). It was also found that MMP- 262 kD/62 kD + 72 kD were apparently higher in invasive carcinomas (0.48) and lymph node metastases (0.61), P < 0.01, respectively. CONCLUSION: These results demonstrated that a clear relationship between MMP - 2 activity and the invasion and metastasis of breast carcinoma.

Objective:To evaluate the role of spinal mammlian target of rapamycin (mTOR)/ribosomal S6 kinase 1 (S6K1)/glioma associated oncogene homolog 1 (Gli1) signaling pathway in chronic morphine tolerance in mice.Methods:Healthy male Kunming mice, aged 8-10 weeks, weighing 23-25 g, were used in the study.The experiment was performed in two parts.Experiment I Fifty mice were randomly assigned into 2 groups: normal saline group (group S, n=10) and morphine group (group M, n=40). In M and S groups, morphine and normal saline 10 mg/kg were injected subcutaneously, respectively, twice a day for 7 consecutive days.The thermal pain threshold (TPT) was measured and the maximum analgesic effect percentage (MPE) was calculated at 1 day before administration and 30 min after the last administration every day.Ten mice in each group were randomly selected and sacrificed after measurement of TPT at 1, 3, 5 and 7 days after administration in group M and after the last measurement of TPT in group S, and the lumbar segment (L 4-6) of the spinal cord was removed.Experiment Ⅱ Forty mice were randomly divided into 4 groups ( n=10 each): KU-0063794+ morphine group (group KU+ M), dimethyl sulfoxide (DMSO)+ morphine group (group DM+ M), morphine+ KU-0063794 group (group M+ KU) and morphine + DMSO group (group M+ DM). Morphine 10 mg/kg was injected subcutaneously twice a day for 7 consecutive days in 4 groups.At 1-3 days of morphine injection, mTOR specific inhibitor KU-0063794 200μl (1 μg/μl) and 10% DMSO 200 μl was injected intraperitoneally in KU+ M group and DM+ M group at 30 min before administration twice a day.At 5-7 days of morphine injection, KU-0063794 200μl (1 μg/μl) or 10% DMSO 200 μl was injected intraperitoneally in group M+ KU or group M+ DM at 30min before administration, respectively, twice a day.TPT was measured and MPE was calculated at 1 day before morphine injection and at 30 min after the last administration every day.The animals were sacrificed after the last measurement of TPT, and the lumbar segment (L 4-6) of the spinal cord was removed for determination of the expression of spinal mTOR, phosphorylated mTOR (p-mTOR), S6K1, phosphorylated S6K1 (p-S6K1) and Gli1 (using Western blot). Results:Experiment Ⅰ Compared with group S, MPE was significantly increased at each time point after administration at 3, 5 and 7 days after administration, expression of spinal p-mTOR, p-S6K1 and Gli1 was significantly down-regulated ( P<0.05), and no significant change was found in mTOR and S6K1 in group M ( P>0.05). Experiment Ⅱ Compared with group DM+ M, MPE was significantly decreased at 3-7 days after morphine injection, expression of p-mTOR, p-S6K1 and Gli1 in spinal cord was down-regulated ( P<0.05), and no significant change was found in expression of mTOR and S6K1 in group KU+ M ( P>0.05). Compared with group M+ DM, MPE was significantly increased at 6-7 days after morphine injection, expression of p-mTOR, p-S6K1 and Gli1 in spinal cord was down-regulated ( P<0.05), and no significant change was found in mTOR and S6K1 in group M+ KU ( P>0.05). Conclution:Spinal mTOR/S6K1/Gli1 signaling pathway is involved in the development and maintenance of chronic morphine tolerance in mice.

Chemotherapy is the preferred therapeutic approach for advanced ovarian cancer, but a successful long-term treatment is prevented by the development of drug resistance. Recent works have underlined the involvement of non-coding RNAs, microRNAs (miRNAs) in cancer development, with several conjectures regarding their possible involvement in the evolution of drug resistance. This study is to investigate the promoting effects and mechanism of miR-125b involved in the development of chemoresistance in ovarian cancer. The different expression of miR-125b in cisplatin-sensitive ovarian cancer cell line (OV2008) and its resistant variant (C13*) was identified by real-time PCR. An in vitro cytotoxicity assay and apoptosis assay using CCK-8 assay and flow cytometry, were carried out to detect the effect of miR-125b and Bak1 on cisplatin resistance of cells. Real-time PCR, Western blotting and luciferase reporter assay were used to detect whether Bak1 is a target of miR-125b. As compared with OV2008 cells, the expression levels of miR-125b in C13* cells were increased. It was found that the up-regulation of microRNA-125b caused a marked inhibition of cisplatin-induced cytotoxicity and apoptosis and a subsequent increase in the resistance to cisplatin in OV2008 and C13* cells. Moreover, Bak1 was a direct target of miR-125b, and down-regulation of Bak1 suppressed cisplatin-induced apoptosis and led to an increased resistance to cisplatin. Our study indicates that miR-125b has a significantly promoting effect on chemoresistance of C13* cells and up-regulation of miR-125b expression contributes to cisplatin resistance through suppression of Bak1 expression. This finding has important implications in the development of targeted therapeutics for overcoming cisplatin resistance in ovarian cancer.

Objective To develop a micro-circumstance airtight cabin for in the study of biological aerosols detection with such functions as airflow control and temperature and humidity detection .Methods Wind speed sensors , temperature and humidity sensors , electrical control valves , high efficiency filters and the vacuum pump formed the micro-circumstance regulating system .The techniques of airflow direction control , temperature compensation , air pressure control and aerosol uniformity distribution were used .Numerical simulation of aerosol concentration distribution in the airtight cabin was achieved using Fluent software .The bioaerosol concentration in different locations was tested by experiments .Results The micro-circumstance airtight cabin consisted of an airtight cabin and a control cabin .The control cabin used a single-chip microprocessor to provide air supply and exhaust air to the airtight cabin in a seaparate exhaust mode and cyclic ventilation mode.It worked under a negative pressure condition .Through numerical simulation,the aerosols were distributed through-out the cabin after five minutes of generation and the bottom airflow arrived at the top .The distribution of aerosol concentra-tion was approximately uniform .Conclusion The micro-circumstance airtight cabin is suited to various bioaerosols testing research thanks to its negative pressure working without bioaerosol leakage .

Objective To measure the diameter of cochlear nerve(CN) in normal hearing children with different ages,and evaluate the diameter variations with age.Methods A total of 156 normal-hearing children were assessed with 3D-FIESTA sequence scanning of the inner ear.All the subjects were divided into 13 groups according to age,witha group of ≤6 months,a group of ≤1 year,and 11 groups from one year to 12 years.Each group had 12 cases,including 6 boys and 6 girls.The diameter of CN was measured at the entrance of the cochlea,the middle of internal auditory canal(IAC) and the fundus of IAC respectively on the axial and oblique sagittal images of 3.0 T MRI by two independent observers.The average values measured by them were the final results.The intraclass correlation coefficient was used to determine the consistency between the two independent observers.The t test was used to access differencesin CN diameter by sex and sides.One-way analysis of variance(ANOVA) and two-way ANOVA were used for comparisons among different groups.Spearman correlation coefficient was applied to find a correlation between the CN diameter and age.Results The diameters of normal-hearing children's CN at the middle of the IAC,IAC fundus and the entrance of the cochlea were (1.12 ± 0.08),(1.05 ± 0.06),(0.87 ± 0.14) mm respectively,and there was significant difference among the three measuring points (F=527.57,P＜0.05).The diameters of the CN had no significant differenc (P＞0.05) in age-groups,gender and sides(P＞0.05),and there was no correlation between the diameters of normal children's CN and age.Conclusions The diameters of normal-hearing children's CN change with different points of the IAC,of which the maximum value is at the middle of the IAC,followed by the IAC fundus,and the entrance of the cochlea is at the minimum,more over the normal size doesn't change with age.